[compiler-rt] 53065c5 - [Sanitizers] Remove OpenBSD support (new attempt)

David Carlier via llvm-commits llvm-commits at lists.llvm.org
Tue Oct 20 02:16:22 PDT 2020


Author: David Carlier
Date: 2020-10-20T11:16:09+01:00
New Revision: 53065c543fe3f1e7913c9e8f2487d76034afa249

URL: https://github.com/llvm/llvm-project/commit/53065c543fe3f1e7913c9e8f2487d76034afa249
DIFF: https://github.com/llvm/llvm-project/commit/53065c543fe3f1e7913c9e8f2487d76034afa249.diff

LOG: [Sanitizers] Remove OpenBSD support (new attempt)

- Fixing VS compiler and other cases settings this time.

Reviewers: dmajor, hans

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D89759

Added: 
    

Modified: 
    compiler-rt/cmake/base-config-ix.cmake
    compiler-rt/cmake/config-ix.cmake
    compiler-rt/lib/asan/tests/asan_mem_test.cpp
    compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
    compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
    compiler-rt/lib/fuzzer/FuzzerPlatform.h
    compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
    compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
    compiler-rt/lib/fuzzer/afl/afl_driver.cpp
    compiler-rt/lib/interception/interception.h
    compiler-rt/lib/interception/interception_linux.cpp
    compiler-rt/lib/interception/interception_linux.h
    compiler-rt/lib/sanitizer_common/CMakeLists.txt
    compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
    compiler-rt/lib/sanitizer_common/sanitizer_errno.h
    compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
    compiler-rt/lib/sanitizer_common/sanitizer_libignore.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_linux.h
    compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_openbsd.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_platform.h
    compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
    compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
    compiler-rt/lib/sanitizer_common/sanitizer_posix.h
    compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
    compiler-rt/lib/sanitizer_common/sanitizer_procmaps_bsd.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_procmaps_common.cpp
    compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
    compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc
    compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cpp
    compiler-rt/lib/tsan/go/buildgo.sh
    compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp
    compiler-rt/lib/ubsan/ubsan_platform.h
    compiler-rt/lib/xray/xray_basic_logging.cpp
    compiler-rt/lib/xray/xray_x86_64.cpp

Removed: 
    


################################################################################
diff  --git a/compiler-rt/cmake/base-config-ix.cmake b/compiler-rt/cmake/base-config-ix.cmake
index a4c29d2943ca..1edab43e7c0d 100644
--- a/compiler-rt/cmake/base-config-ix.cmake
+++ b/compiler-rt/cmake/base-config-ix.cmake
@@ -170,16 +170,8 @@ macro(test_targets)
       add_default_target_arch(${COMPILER_RT_DEFAULT_TARGET_ARCH})
     elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" MATCHES "i[2-6]86|x86|amd64")
       if(NOT MSVC)
-        if(CMAKE_SYSTEM_NAME MATCHES "OpenBSD")
-          if (CMAKE_SIZEOF_VOID_P EQUAL 4)
-            test_target_arch(i386 __i386__ "-m32")
-          else()
-            test_target_arch(x86_64 "" "-m64")
-          endif()
-        else()
-          test_target_arch(x86_64 "" "-m64")
-          test_target_arch(i386 __i386__ "-m32")
-        endif()
+        test_target_arch(x86_64 "" "-m64")
+        test_target_arch(i386 __i386__ "-m32")
       else()
         if (CMAKE_SIZEOF_VOID_P EQUAL 4)
           test_target_arch(i386 "" "")

diff  --git a/compiler-rt/cmake/config-ix.cmake b/compiler-rt/cmake/config-ix.cmake
index dd49544a476e..38a1a2bdfac5 100644
--- a/compiler-rt/cmake/config-ix.cmake
+++ b/compiler-rt/cmake/config-ix.cmake
@@ -644,7 +644,7 @@ set(COMPILER_RT_SANITIZERS_TO_BUILD all CACHE STRING
 list_replace(COMPILER_RT_SANITIZERS_TO_BUILD all "${ALL_SANITIZERS}")
 
 if (SANITIZER_COMMON_SUPPORTED_ARCH AND NOT LLVM_USE_SANITIZER AND
-    (OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD|NetBSD|OpenBSD|Fuchsia|SunOS" OR
+    (OS_NAME MATCHES "Android|Darwin|Linux|FreeBSD|NetBSD|Fuchsia|SunOS" OR
     (OS_NAME MATCHES "Windows" AND NOT CYGWIN AND
         (NOT MINGW OR CMAKE_CXX_COMPILER_ID MATCHES "Clang"))))
   set(COMPILER_RT_HAS_SANITIZER_COMMON TRUE)
@@ -658,8 +658,7 @@ else()
   set(COMPILER_RT_HAS_INTERCEPTION FALSE)
 endif()
 
-if (COMPILER_RT_HAS_SANITIZER_COMMON AND ASAN_SUPPORTED_ARCH AND
-    NOT OS_NAME MATCHES "OpenBSD")
+if (COMPILER_RT_HAS_SANITIZER_COMMON AND ASAN_SUPPORTED_ARCH)
   set(COMPILER_RT_HAS_ASAN TRUE)
 else()
   set(COMPILER_RT_HAS_ASAN FALSE)
@@ -729,14 +728,14 @@ else()
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND UBSAN_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Darwin|Linux|FreeBSD|NetBSD|OpenBSD|Windows|Android|Fuchsia|SunOS")
+    OS_NAME MATCHES "Darwin|Linux|FreeBSD|NetBSD|Windows|Android|Fuchsia|SunOS")
   set(COMPILER_RT_HAS_UBSAN TRUE)
 else()
   set(COMPILER_RT_HAS_UBSAN FALSE)
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND UBSAN_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Linux|FreeBSD|NetBSD|OpenBSD|Android|Darwin")
+    OS_NAME MATCHES "Linux|FreeBSD|NetBSD|Android|Darwin")
   set(COMPILER_RT_HAS_UBSAN_MINIMAL TRUE)
 else()
   set(COMPILER_RT_HAS_UBSAN_MINIMAL FALSE)
@@ -771,14 +770,14 @@ else()
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND XRAY_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Darwin|Linux|FreeBSD|NetBSD|OpenBSD|Fuchsia")
+    OS_NAME MATCHES "Darwin|Linux|FreeBSD|NetBSD|Fuchsia")
   set(COMPILER_RT_HAS_XRAY TRUE)
 else()
   set(COMPILER_RT_HAS_XRAY FALSE)
 endif()
 
 if (COMPILER_RT_HAS_SANITIZER_COMMON AND FUZZER_SUPPORTED_ARCH AND
-    OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|OpenBSD|Fuchsia|Windows")
+    OS_NAME MATCHES "Android|Darwin|Linux|NetBSD|FreeBSD|Fuchsia|Windows")
   set(COMPILER_RT_HAS_FUZZER TRUE)
 else()
   set(COMPILER_RT_HAS_FUZZER FALSE)

diff  --git a/compiler-rt/lib/asan/tests/asan_mem_test.cpp b/compiler-rt/lib/asan/tests/asan_mem_test.cpp
index 5007d552bfff..e2af1b8d79a9 100644
--- a/compiler-rt/lib/asan/tests/asan_mem_test.cpp
+++ b/compiler-rt/lib/asan/tests/asan_mem_test.cpp
@@ -245,7 +245,7 @@ TEST(AddressSanitizer, MemCmpOOBTest) { CmpOOBTestCommon<memcmp>(); }
 
 TEST(AddressSanitizer, BCmpOOBTest) {
 #if (defined(__linux__) && !defined(__ANDROID__) && defined(_GNU_SOURCE)) || \
-    defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+    defined(__NetBSD__) || defined(__FreeBSD__)
   CmpOOBTestCommon<bcmp>();
 #endif
 }

diff  --git a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp b/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
index 24ddc57d47d6..3ef758daa7b6 100644
--- a/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerExtFunctionsWeak.cpp
@@ -13,7 +13,7 @@
 //===----------------------------------------------------------------------===//
 #include "FuzzerPlatform.h"
 #if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FUCHSIA ||                \
-    LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN
+    LIBFUZZER_FREEBSD || LIBFUZZER_EMSCRIPTEN
 
 #include "FuzzerExtFunctions.h"
 #include "FuzzerIO.h"

diff  --git a/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp b/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
index d36beba1b1ba..04f569a1a879 100644
--- a/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerExtraCounters.cpp
@@ -12,7 +12,7 @@
 #include <cstdint>
 
 #if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD ||                \
-    LIBFUZZER_OPENBSD || LIBFUZZER_FUCHSIA || LIBFUZZER_EMSCRIPTEN
+    LIBFUZZER_FUCHSIA || LIBFUZZER_EMSCRIPTEN
 __attribute__((weak)) extern uint8_t __start___libfuzzer_extra_counters;
 __attribute__((weak)) extern uint8_t __stop___libfuzzer_extra_counters;
 

diff  --git a/compiler-rt/lib/fuzzer/FuzzerPlatform.h b/compiler-rt/lib/fuzzer/FuzzerPlatform.h
index 8befdb882cc6..1602e6789500 100644
--- a/compiler-rt/lib/fuzzer/FuzzerPlatform.h
+++ b/compiler-rt/lib/fuzzer/FuzzerPlatform.h
@@ -18,7 +18,6 @@
 #define LIBFUZZER_LINUX 1
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif __APPLE__
@@ -27,7 +26,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif __NetBSD__
@@ -36,7 +34,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 1
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif __FreeBSD__
@@ -45,16 +42,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 1
-#define LIBFUZZER_OPENBSD 0
-#define LIBFUZZER_WINDOWS 0
-#define LIBFUZZER_EMSCRIPTEN 0
-#elif __OpenBSD__
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_FUCHSIA 0
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 1
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif _WIN32
@@ -63,7 +50,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 1
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif __Fuchsia__
@@ -72,7 +58,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 0
 #elif __EMSCRIPTEN__
@@ -81,7 +66,6 @@
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #define LIBFUZZER_WINDOWS 0
 #define LIBFUZZER_EMSCRIPTEN 1
 #else
@@ -101,7 +85,7 @@
 
 #define LIBFUZZER_POSIX                                                        \
   (LIBFUZZER_APPLE || LIBFUZZER_LINUX || LIBFUZZER_NETBSD ||                   \
-   LIBFUZZER_FREEBSD || LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN)
+   LIBFUZZER_FREEBSD || LIBFUZZER_EMSCRIPTEN)
 
 #ifdef __x86_64
 #if __has_attribute(target)

diff  --git a/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp b/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
index 95490b992e0b..981f9a8b429f 100644
--- a/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerUtilLinux.cpp
@@ -9,7 +9,7 @@
 //===----------------------------------------------------------------------===//
 #include "FuzzerPlatform.h"
 #if LIBFUZZER_LINUX || LIBFUZZER_NETBSD || LIBFUZZER_FREEBSD ||                \
-    LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN
+    LIBFUZZER_EMSCRIPTEN
 #include "FuzzerCommand.h"
 
 #include <stdlib.h>

diff  --git a/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp b/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
index 27ce69acb51a..afb733409ab5 100644
--- a/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
+++ b/compiler-rt/lib/fuzzer/FuzzerUtilPosix.cpp
@@ -148,7 +148,7 @@ size_t GetPeakRSSMb() {
   if (getrusage(RUSAGE_SELF, &usage))
     return 0;
   if (LIBFUZZER_LINUX || LIBFUZZER_FREEBSD || LIBFUZZER_NETBSD ||
-      LIBFUZZER_OPENBSD || LIBFUZZER_EMSCRIPTEN) {
+      LIBFUZZER_EMSCRIPTEN) {
     // ru_maxrss is in KiB
     return usage.ru_maxrss >> 10;
   } else if (LIBFUZZER_APPLE) {

diff  --git a/compiler-rt/lib/fuzzer/afl/afl_driver.cpp b/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
index 457f180ecc82..52aede7e078d 100644
--- a/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
+++ b/compiler-rt/lib/fuzzer/afl/afl_driver.cpp
@@ -60,31 +60,21 @@ If 1, close stdout at startup. If 2 close stderr; if 3 close both.
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #elif __APPLE__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 1
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #elif __NetBSD__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 1
 #define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 0
 #elif __FreeBSD__
 #define LIBFUZZER_LINUX 0
 #define LIBFUZZER_APPLE 0
 #define LIBFUZZER_NETBSD 0
 #define LIBFUZZER_FREEBSD 1
-#define LIBFUZZER_OPENBSD 0
-#elif __OpenBSD__
-#define LIBFUZZER_LINUX 0
-#define LIBFUZZER_APPLE 0
-#define LIBFUZZER_NETBSD 0
-#define LIBFUZZER_FREEBSD 0
-#define LIBFUZZER_OPENBSD 1
 #else
 #error "Support for your platform has not been implemented"
 #endif

diff  --git a/compiler-rt/lib/interception/interception.h b/compiler-rt/lib/interception/interception.h
index d27a8ccf92a8..cb0b5284ed26 100644
--- a/compiler-rt/lib/interception/interception.h
+++ b/compiler-rt/lib/interception/interception.h
@@ -17,7 +17,7 @@
 #include "sanitizer_common/sanitizer_internal_defs.h"
 
 #if !SANITIZER_LINUX && !SANITIZER_FREEBSD && !SANITIZER_MAC && \
-    !SANITIZER_NETBSD && !SANITIZER_OPENBSD && !SANITIZER_WINDOWS && \
+    !SANITIZER_NETBSD && !SANITIZER_WINDOWS && \
     !SANITIZER_FUCHSIA && !SANITIZER_RTEMS && !SANITIZER_SOLARIS
 # error "Interception doesn't work on this operating system."
 #endif
@@ -281,7 +281,7 @@ typedef unsigned long uptr;
 #define INCLUDED_FROM_INTERCEPTION_LIB
 
 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 # include "interception_linux.h"
 # define INTERCEPT_FUNCTION(func) INTERCEPT_FUNCTION_LINUX_OR_FREEBSD(func)

diff  --git a/compiler-rt/lib/interception/interception_linux.cpp b/compiler-rt/lib/interception/interception_linux.cpp
index 950cd5126538..6883608d44f3 100644
--- a/compiler-rt/lib/interception/interception_linux.cpp
+++ b/compiler-rt/lib/interception/interception_linux.cpp
@@ -14,7 +14,7 @@
 #include "interception.h"
 
 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 #include <dlfcn.h>   // for dlsym() and dlvsym()
 
@@ -64,7 +64,7 @@ bool InterceptFunction(const char *name, uptr *ptr_to_real, uptr func,
 }
 
 // Android and Solaris do not have dlvsym
-#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD
+#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS
 static void *GetFuncAddr(const char *name, const char *ver) {
   return dlvsym(RTLD_NEXT, name, ver);
 }
@@ -80,4 +80,4 @@ bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
 }  // namespace __interception
 
 #endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
-        // SANITIZER_OPENBSD || SANITIZER_SOLARIS
+        // SANITIZER_SOLARIS

diff  --git a/compiler-rt/lib/interception/interception_linux.h b/compiler-rt/lib/interception/interception_linux.h
index e578da0cf64e..097375fd1c16 100644
--- a/compiler-rt/lib/interception/interception_linux.h
+++ b/compiler-rt/lib/interception/interception_linux.h
@@ -12,7 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 #if !defined(INCLUDED_FROM_INTERCEPTION_LIB)
 # error "interception_linux.h should be included from interception library only"
@@ -35,8 +35,8 @@ bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
       (::__interception::uptr) & (func),          \
       (::__interception::uptr) & WRAP(func))
 
-// Android,  Solaris and OpenBSD do not have dlvsym
-#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS && !SANITIZER_OPENBSD
+// Android and Solaris do not have dlvsym
+#if !SANITIZER_ANDROID && !SANITIZER_SOLARIS
 #define INTERCEPT_FUNCTION_VER_LINUX_OR_FREEBSD(func, symver) \
   ::__interception::InterceptFunction(                        \
       #func, symver,                                          \
@@ -50,4 +50,4 @@ bool InterceptFunction(const char *name, const char *ver, uptr *ptr_to_real,
 
 #endif  // INTERCEPTION_LINUX_H
 #endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
-        // SANITIZER_OPENBSD || SANITIZER_SOLARIS
+        // SANITIZER_SOLARIS

diff  --git a/compiler-rt/lib/sanitizer_common/CMakeLists.txt b/compiler-rt/lib/sanitizer_common/CMakeLists.txt
index 3ac13f6a64dc..674835aba120 100644
--- a/compiler-rt/lib/sanitizer_common/CMakeLists.txt
+++ b/compiler-rt/lib/sanitizer_common/CMakeLists.txt
@@ -17,12 +17,10 @@ set(SANITIZER_SOURCES_NOTERMINATION
   sanitizer_linux_s390.cpp
   sanitizer_mac.cpp
   sanitizer_netbsd.cpp
-  sanitizer_openbsd.cpp
   sanitizer_persistent_allocator.cpp
   sanitizer_platform_limits_freebsd.cpp
   sanitizer_platform_limits_linux.cpp
   sanitizer_platform_limits_netbsd.cpp
-  sanitizer_platform_limits_openbsd.cpp
   sanitizer_platform_limits_posix.cpp
   sanitizer_platform_limits_solaris.cpp
   sanitizer_posix.cpp
@@ -159,7 +157,6 @@ set(SANITIZER_IMPL_HEADERS
   sanitizer_platform.h
   sanitizer_platform_interceptors.h
   sanitizer_platform_limits_netbsd.h
-  sanitizer_platform_limits_openbsd.h
   sanitizer_platform_limits_posix.h
   sanitizer_platform_limits_solaris.h
   sanitizer_posix.h

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
index 5b510781d407..729eead43c04 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_common_interceptors.inc
@@ -1864,7 +1864,7 @@ UNUSED static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) {
       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_gecos,
                                      REAL(strlen)(pwd->pw_gecos) + 1);
 #endif
-#if SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD
+#if SANITIZER_MAC || SANITIZER_FREEBSD || SANITIZER_NETBSD
     if (pwd->pw_class)
       COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_class,
                                      REAL(strlen)(pwd->pw_class) + 1);
@@ -3750,7 +3750,7 @@ INTERCEPTOR(char *, strerror, int errnum) {
 //    static storage.
 #if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \
     SANITIZER_MAC || SANITIZER_ANDROID || SANITIZER_NETBSD ||                 \
-    SANITIZER_FREEBSD || SANITIZER_OPENBSD
+    SANITIZER_FREEBSD
 // POSIX version. Spec is not clear on whether buf is NULL-terminated.
 // At least on OSX, buf contents are valid even when the call fails.
 INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) {

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_errno.h b/compiler-rt/lib/sanitizer_common/sanitizer_errno.h
index 584e66e4a861..94f16b6e8735 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_errno.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_errno.h
@@ -23,7 +23,7 @@
 
 #if SANITIZER_FREEBSD || SANITIZER_MAC
 #  define __errno_location __error
-#elif SANITIZER_ANDROID || SANITIZER_NETBSD || SANITIZER_OPENBSD || \
+#elif SANITIZER_ANDROID || SANITIZER_NETBSD || \
   SANITIZER_RTEMS
 #  define __errno_location __errno
 #elif SANITIZER_SOLARIS

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h b/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
index 8b34e54137df..26a7d615d8b7 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_internal_defs.h
@@ -39,7 +39,7 @@
 
 // TLS is handled 
diff erently on 
diff erent platforms
 #if SANITIZER_LINUX || SANITIZER_NETBSD || \
-  SANITIZER_FREEBSD || SANITIZER_OPENBSD
+  SANITIZER_FREEBSD
 # define SANITIZER_TLS_INITIAL_EXEC_ATTRIBUTE \
     __attribute__((tls_model("initial-exec"))) thread_local
 #else
@@ -104,7 +104,7 @@
 //
 // FIXME: do we have anything like this on Mac?
 #ifndef SANITIZER_CAN_USE_PREINIT_ARRAY
-#if ((SANITIZER_LINUX && !SANITIZER_ANDROID) || SANITIZER_OPENBSD || \
+#if ((SANITIZER_LINUX && !SANITIZER_ANDROID) || \
      SANITIZER_FUCHSIA || SANITIZER_NETBSD) && !defined(PIC)
 #define SANITIZER_CAN_USE_PREINIT_ARRAY 1
 // Before Solaris 11.4, .preinit_array is fully supported only with GNU ld.
@@ -170,7 +170,7 @@ typedef int pid_t;
 #endif
 
 #if SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_MAC || \
+    SANITIZER_MAC || \
     (SANITIZER_SOLARIS && (defined(_LP64) || _FILE_OFFSET_BITS == 64)) || \
     (SANITIZER_LINUX && defined(__x86_64__))
 typedef u64 OFF_T;
@@ -182,7 +182,7 @@ typedef u64  OFF64_T;
 #if (SANITIZER_WORDSIZE == 64) || SANITIZER_MAC
 typedef uptr operator_new_size_type;
 #else
-# if SANITIZER_OPENBSD || defined(__s390__) && !defined(__s390x__)
+# if defined(__s390__) && !defined(__s390x__)
 // Special case: 31-bit s390 has unsigned long as size_t.
 typedef unsigned long operator_new_size_type;
 # else

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_libignore.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_libignore.cpp
index eb9bb765013d..9ea19bc21fa3 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_libignore.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_libignore.cpp
@@ -9,7 +9,7 @@
 #include "sanitizer_platform.h"
 
 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC || \
-    SANITIZER_NETBSD || SANITIZER_OPENBSD
+    SANITIZER_NETBSD
 
 #include "sanitizer_libignore.h"
 #include "sanitizer_flags.h"

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
index c84946ca9bf2..024bef3c0582 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
@@ -14,7 +14,7 @@
 #include "sanitizer_platform.h"
 
 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 #include "sanitizer_common.h"
 #include "sanitizer_flags.h"
@@ -59,13 +59,7 @@
 #include <sys/syscall.h>
 #include <sys/time.h>
 #include <sys/types.h>
-#if !SANITIZER_OPENBSD
 #include <ucontext.h>
-#endif
-#if SANITIZER_OPENBSD
-#include <sys/futex.h>
-#include <sys/sysctl.h>
-#endif
 #include <unistd.h>
 
 #if SANITIZER_LINUX
@@ -129,7 +123,7 @@ const int FUTEX_WAKE_PRIVATE = FUTEX_WAKE | FUTEX_PRIVATE_FLAG;
 #endif
 
 // Note : FreeBSD had implemented both
-// Linux and OpenBSD apis, available from
+// Linux apis, available from
 // future 12.x version most likely
 #if SANITIZER_LINUX && defined(__NR_getrandom)
 # if !defined(GRND_NONBLOCK)
@@ -140,15 +134,11 @@ const int FUTEX_WAKE_PRIVATE = FUTEX_WAKE | FUTEX_PRIVATE_FLAG;
 # define SANITIZER_USE_GETRANDOM 0
 #endif  // SANITIZER_LINUX && defined(__NR_getrandom)
 
-#if SANITIZER_OPENBSD
-# define SANITIZER_USE_GETENTROPY 1
+#if SANITIZER_FREEBSD && __FreeBSD_version >= 1200000
+#  define SANITIZER_USE_GETENTROPY 1
 #else
-# if SANITIZER_FREEBSD && __FreeBSD_version >= 1200000
-#   define SANITIZER_USE_GETENTROPY 1
-# else
-#   define SANITIZER_USE_GETENTROPY 0
-# endif
-#endif // SANITIZER_USE_GETENTROPY
+#  define SANITIZER_USE_GETENTROPY 0
+#endif
 
 namespace __sanitizer {
 
@@ -166,7 +156,7 @@ namespace __sanitizer {
 
 // --------------- sanitizer_libc.h
 #if !SANITIZER_SOLARIS && !SANITIZER_NETBSD
-#if !SANITIZER_S390 && !SANITIZER_OPENBSD
+#if !SANITIZER_S390
 uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
                    u64 offset) {
 #if SANITIZER_FREEBSD || SANITIZER_LINUX_USES_64BIT_SYSCALLS
@@ -179,9 +169,8 @@ uptr internal_mmap(void *addr, uptr length, int prot, int flags, int fd,
                           offset / 4096);
 #endif
 }
-#endif // !SANITIZER_S390 && !SANITIZER_OPENBSD
+#endif // !SANITIZER_S390
 
-#if !SANITIZER_OPENBSD
 uptr internal_munmap(void *addr, uptr length) {
   return internal_syscall(SYSCALL(munmap), (uptr)addr, length);
 }
@@ -193,7 +182,6 @@ int internal_mprotect(void *addr, uptr length, int prot) {
 int internal_madvise(uptr addr, uptr length, int advice) {
   return internal_syscall(SYSCALL(madvise), addr, length, advice);
 }
-#endif
 
 uptr internal_close(fd_t fd) {
   return internal_syscall(SYSCALL(close), fd);
@@ -305,7 +293,7 @@ static void kernel_stat_to_stat(struct kernel_stat *in, struct stat *out) {
 #endif
 
 uptr internal_stat(const char *path, void *buf) {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD
   return internal_syscall(SYSCALL(fstatat), AT_FDCWD, (uptr)path, (uptr)buf, 0);
 #elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
   return internal_syscall(SYSCALL(newfstatat), AT_FDCWD, (uptr)path, (uptr)buf,
@@ -329,7 +317,7 @@ uptr internal_stat(const char *path, void *buf) {
 }
 
 uptr internal_lstat(const char *path, void *buf) {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD
   return internal_syscall(SYSCALL(fstatat), AT_FDCWD, (uptr)path, (uptr)buf,
                           AT_SYMLINK_NOFOLLOW);
 #elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
@@ -354,9 +342,8 @@ uptr internal_lstat(const char *path, void *buf) {
 }
 
 uptr internal_fstat(fd_t fd, void *buf) {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD || \
-    SANITIZER_LINUX_USES_64BIT_SYSCALLS
-#if SANITIZER_MIPS64 && !SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD || SANITIZER_LINUX_USES_64BIT_SYSCALLS
+#if SANITIZER_MIPS64
   // For mips64, fstat syscall fills buffer in the format of kernel_stat
   struct kernel_stat kbuf;
   int res = internal_syscall(SYSCALL(fstat), fd, &kbuf);
@@ -396,16 +383,13 @@ uptr internal_readlink(const char *path, char *buf, uptr bufsize) {
 #if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
   return internal_syscall(SYSCALL(readlinkat), AT_FDCWD, (uptr)path, (uptr)buf,
                           bufsize);
-#elif SANITIZER_OPENBSD
-  return internal_syscall(SYSCALL(readlinkat), AT_FDCWD, (uptr)path, (uptr)buf,
-                          bufsize);
 #else
   return internal_syscall(SYSCALL(readlink), (uptr)path, (uptr)buf, bufsize);
 #endif
 }
 
 uptr internal_unlink(const char *path) {
-#if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS || SANITIZER_OPENBSD
+#if SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
   return internal_syscall(SYSCALL(unlinkat), AT_FDCWD, (uptr)path, 0);
 #else
   return internal_syscall(SYSCALL(unlink), (uptr)path);
@@ -416,7 +400,7 @@ uptr internal_rename(const char *oldpath, const char *newpath) {
 #if defined(__riscv)
   return internal_syscall(SYSCALL(renameat2), AT_FDCWD, (uptr)oldpath, AT_FDCWD,
                           (uptr)newpath, 0);
-#elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS || SANITIZER_OPENBSD
+#elif SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
   return internal_syscall(SYSCALL(renameat), AT_FDCWD, (uptr)oldpath, AT_FDCWD,
                           (uptr)newpath);
 #else
@@ -446,7 +430,7 @@ uptr internal_execve(const char *filename, char *const argv[],
 
 #if !SANITIZER_NETBSD
 void internal__exit(int exitcode) {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD || SANITIZER_SOLARIS
+#if SANITIZER_FREEBSD || SANITIZER_SOLARIS
   internal_syscall(SYSCALL(exit), exitcode);
 #else
   internal_syscall(SYSCALL(exit_group), exitcode);
@@ -476,8 +460,6 @@ tid_t GetTid() {
   long Tid;
   thr_self(&Tid);
   return Tid;
-#elif SANITIZER_OPENBSD
-  return internal_syscall(SYSCALL(getthrid));
 #elif SANITIZER_SOLARIS
   return thr_self();
 #else
@@ -490,9 +472,6 @@ int TgKill(pid_t pid, tid_t tid, int sig) {
   return internal_syscall(SYSCALL(tgkill), pid, tid, sig);
 #elif SANITIZER_FREEBSD
   return internal_syscall(SYSCALL(thr_kill2), pid, tid, sig);
-#elif SANITIZER_OPENBSD
-  (void)pid;
-  return internal_syscall(SYSCALL(thrkill), tid, sig, nullptr);
 #elif SANITIZER_SOLARIS
   (void)pid;
   return thr_kill(tid, sig);
@@ -502,7 +481,7 @@ int TgKill(pid_t pid, tid_t tid, int sig) {
 
 #if !SANITIZER_SOLARIS && !SANITIZER_NETBSD
 u64 NanoTime() {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD
   timeval tv;
 #else
   kernel_timeval tv;
@@ -521,8 +500,7 @@ uptr internal_clock_gettime(__sanitizer_clockid_t clk_id, void *tp) {
 // 'environ' array (on some others) and does not use libc. This function
 // should be called first inside __asan_init.
 const char *GetEnv(const char *name) {
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD || \
-    SANITIZER_SOLARIS
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_SOLARIS
   if (::environ != 0) {
     uptr NameLen = internal_strlen(name);
     for (char **Env = ::environ; *Env != 0; Env++) {
@@ -560,15 +538,13 @@ const char *GetEnv(const char *name) {
 #endif
 }
 
-#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD && !SANITIZER_OPENBSD && \
-    !SANITIZER_GO
+#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD && !SANITIZER_GO
 extern "C" {
 SANITIZER_WEAK_ATTRIBUTE extern void *__libc_stack_end;
 }
 #endif
 
-#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD &&                \
-    !SANITIZER_OPENBSD
+#if !SANITIZER_FREEBSD && !SANITIZER_NETBSD
 static void ReadNullSepFileToArray(const char *path, char ***arr,
                                    int arr_size) {
   char *buff;
@@ -593,7 +569,6 @@ static void ReadNullSepFileToArray(const char *path, char ***arr,
 }
 #endif
 
-#if !SANITIZER_OPENBSD
 static void GetArgsAndEnv(char ***argv, char ***envp) {
 #if SANITIZER_FREEBSD
   // On FreeBSD, retrieving the argument and environment arrays is done via the
@@ -645,8 +620,6 @@ char **GetEnviron() {
   return envp;
 }
 
-#endif  // !SANITIZER_OPENBSD
-
 #if !SANITIZER_SOLARIS
 enum MutexState {
   MtxUnlocked = 0,
@@ -702,16 +675,6 @@ void BlockingMutex::CheckLocked() {
 // 32-bit syscall here.
 #if SANITIZER_NETBSD
 // Not used
-#elif SANITIZER_OPENBSD
-// struct dirent is 
diff erent for Linux and us. At this moment, we use only
-// d_fileno (Linux call this d_ino), d_reclen, and d_name.
-struct linux_dirent {
-  u64 d_ino;  // d_fileno
-  u16 d_reclen;
-  u16 d_namlen;  // not used
-  u8 d_type;     // not used
-  char d_name[NAME_MAX + 1];
-};
 #else
 struct linux_dirent {
 #if SANITIZER_X32 || defined(__aarch64__) || SANITIZER_RISCV64
@@ -789,19 +752,13 @@ int internal_fork() {
 #endif
 }
 
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD
 int internal_sysctl(const int *name, unsigned int namelen, void *oldp,
                     uptr *oldlenp, const void *newp, uptr newlen) {
-#if SANITIZER_OPENBSD
-  return sysctl(name, namelen, oldp, (size_t *)oldlenp, (void *)newp,
-                (size_t)newlen);
-#else
   return internal_syscall(SYSCALL(__sysctl), name, namelen, oldp,
                           (size_t *)oldlenp, newp, (size_t)newlen);
-#endif
 }
 
-#if SANITIZER_FREEBSD
 int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
                           const void *newp, uptr newlen) {
   // Note: this function can be called during startup, so we need to avoid
@@ -829,7 +786,6 @@ int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
 #endif
 }
 #endif
-#endif
 
 #if SANITIZER_LINUX
 #define SA_RESTORER 0x04000000
@@ -882,7 +838,7 @@ int internal_sigaction_norestorer(int signum, const void *act, void *oldact) {
 
 uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
                           __sanitizer_sigset_t *oldset) {
-#if SANITIZER_FREEBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD
   return internal_syscall(SYSCALL(sigprocmask), how, set, oldset);
 #else
   __sanitizer_kernel_sigset_t *k_set = (__sanitizer_kernel_sigset_t *)set;
@@ -1059,7 +1015,7 @@ static uptr GetKernelAreaSize() {
 #endif  // SANITIZER_WORDSIZE == 32
 
 uptr GetMaxVirtualAddress() {
-#if (SANITIZER_NETBSD || SANITIZER_OPENBSD) && defined(__x86_64__)
+#if SANITIZER_NETBSD && defined(__x86_64__)
   return 0x7f7ffffff000ULL;  // (0x00007f8000000000 - PAGE_SIZE)
 #elif SANITIZER_WORDSIZE == 64
 # if defined(__powerpc64__) || defined(__aarch64__)
@@ -1122,7 +1078,6 @@ uptr GetPageSize() {
 }
 #endif // !SANITIZER_ANDROID
 
-#if !SANITIZER_OPENBSD
 uptr ReadBinaryName(/*out*/char *buf, uptr buf_len) {
 #if SANITIZER_SOLARIS
   const char *default_module_name = getexecname();
@@ -1159,7 +1114,6 @@ uptr ReadBinaryName(/*out*/char *buf, uptr buf_len) {
   return module_name_len;
 #endif
 }
-#endif // !SANITIZER_OPENBSD
 
 uptr ReadLongProcessName(/*out*/ char *buf, uptr buf_len) {
 #if SANITIZER_LINUX
@@ -1192,10 +1146,10 @@ bool LibraryNameIs(const char *full_name, const char *base_name) {
 // Call cb for each region mapped by map.
 void ForEachMappedRegion(link_map *map, void (*cb)(const void *, uptr)) {
   CHECK_NE(map, nullptr);
-#if !SANITIZER_FREEBSD && !SANITIZER_OPENBSD
+#if !SANITIZER_FREEBSD
   typedef ElfW(Phdr) Elf_Phdr;
   typedef ElfW(Ehdr) Elf_Ehdr;
-#endif // !SANITIZER_FREEBSD && !SANITIZER_OPENBSD
+#endif // !SANITIZER_FREEBSD
   char *base = (char *)map->l_addr;
   Elf_Ehdr *ehdr = (Elf_Ehdr *)base;
   char *phdrs = base + ehdr->e_phoff;
@@ -1845,11 +1799,7 @@ static bool Aarch64GetESR(ucontext_t *ucontext, u64 *esr) {
 }
 #endif
 
-#if SANITIZER_OPENBSD
-using Context = sigcontext;
-#else
 using Context = ucontext_t;
-#endif
 
 SignalContext::WriteFlag SignalContext::GetWriteFlag() const {
   Context *ucontext = (Context *)context;
@@ -1859,8 +1809,6 @@ SignalContext::WriteFlag SignalContext::GetWriteFlag() const {
   uptr err = ucontext->uc_mcontext.mc_err;
 #elif SANITIZER_NETBSD
   uptr err = ucontext->uc_mcontext.__gregs[_REG_ERR];
-#elif SANITIZER_OPENBSD
-  uptr err = ucontext->sc_err;
 #elif SANITIZER_SOLARIS && defined(__i386__)
   const int Err = 13;
   uptr err = ucontext->uc_mcontext.gregs[Err];
@@ -2086,11 +2034,6 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
   *pc = ucontext->uc_mcontext.mc_rip;
   *bp = ucontext->uc_mcontext.mc_rbp;
   *sp = ucontext->uc_mcontext.mc_rsp;
-#elif SANITIZER_OPENBSD
-  sigcontext *ucontext = (sigcontext *)context;
-  *pc = ucontext->sc_rip;
-  *bp = ucontext->sc_rbp;
-  *sp = ucontext->sc_rsp;
 # else
   ucontext_t *ucontext = (ucontext_t*)context;
   *pc = ucontext->uc_mcontext.gregs[REG_RIP];
@@ -2103,11 +2046,6 @@ static void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
   *pc = ucontext->uc_mcontext.mc_eip;
   *bp = ucontext->uc_mcontext.mc_ebp;
   *sp = ucontext->uc_mcontext.mc_esp;
-#elif SANITIZER_OPENBSD
-  sigcontext *ucontext = (sigcontext *)context;
-  *pc = ucontext->sc_eip;
-  *bp = ucontext->sc_ebp;
-  *sp = ucontext->sc_esp;
 # else
   ucontext_t *ucontext = (ucontext_t*)context;
 # if SANITIZER_SOLARIS

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux.h b/compiler-rt/lib/sanitizer_common/sanitizer_linux.h
index a8625ca86e8d..24902d1b6bce 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux.h
@@ -14,12 +14,11 @@
 
 #include "sanitizer_platform.h"
 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD ||                \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 #include "sanitizer_common.h"
 #include "sanitizer_internal_defs.h"
 #include "sanitizer_platform_limits_freebsd.h"
 #include "sanitizer_platform_limits_netbsd.h"
-#include "sanitizer_platform_limits_openbsd.h"
 #include "sanitizer_platform_limits_posix.h"
 #include "sanitizer_platform_limits_solaris.h"
 #include "sanitizer_posix.h"

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
index ecfa38b951c3..10627549704a 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
@@ -14,7 +14,7 @@
 #include "sanitizer_platform.h"
 
 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 #include "sanitizer_allocator_internal.h"
 #include "sanitizer_atomic.h"
@@ -50,11 +50,6 @@
 #define pthread_getattr_np pthread_attr_get_np
 #endif
 
-#if SANITIZER_OPENBSD
-#include <pthread_np.h>
-#include <sys/sysctl.h>
-#endif
-
 #if SANITIZER_NETBSD
 #include <sys/sysctl.h>
 #include <sys/tls.h>
@@ -142,11 +137,6 @@ void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
   CHECK_EQ(thr_stksegment(&ss), 0);
   stacksize = ss.ss_size;
   stackaddr = (char *)ss.ss_sp - stacksize;
-#elif SANITIZER_OPENBSD
-  stack_t sattr;
-  CHECK_EQ(pthread_stackseg_np(pthread_self(), &sattr), 0);
-  stackaddr = sattr.ss_sp;
-  stacksize = sattr.ss_size;
 #else  // !SANITIZER_SOLARIS
   pthread_attr_t attr;
   pthread_attr_init(&attr);
@@ -194,7 +184,7 @@ __attribute__((unused)) static bool GetLibcVersion(int *major, int *minor,
 }
 
 #if !SANITIZER_FREEBSD && !SANITIZER_ANDROID && !SANITIZER_GO && \
-    !SANITIZER_NETBSD && !SANITIZER_OPENBSD && !SANITIZER_SOLARIS
+    !SANITIZER_NETBSD && !SANITIZER_SOLARIS
 static uptr g_tls_size;
 
 #ifdef __i386__
@@ -498,9 +488,6 @@ static void GetTls(uptr *addr, uptr *size) {
       *addr = (uptr)tcb->tcb_dtv[1];
     }
   }
-#elif SANITIZER_OPENBSD
-  *addr = 0;
-  *size = 0;
 #elif SANITIZER_ANDROID
   *addr = 0;
   *size = 0;
@@ -517,7 +504,7 @@ static void GetTls(uptr *addr, uptr *size) {
 #if !SANITIZER_GO
 uptr GetTlsSize() {
 #if SANITIZER_FREEBSD || SANITIZER_ANDROID || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
   uptr addr, size;
   GetTls(&addr, &size);
   return size;
@@ -554,13 +541,13 @@ void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
 #endif
 }
 
-#if !SANITIZER_FREEBSD && !SANITIZER_OPENBSD
+#if !SANITIZER_FREEBSD
 typedef ElfW(Phdr) Elf_Phdr;
 #elif SANITIZER_WORDSIZE == 32 && __FreeBSD_version <= 902001  // v9.2
 #define Elf_Phdr XElf32_Phdr
 #define dl_phdr_info xdl_phdr_info
 #define dl_iterate_phdr(c, b) xdl_iterate_phdr((c), (b))
-#endif  // !SANITIZER_FREEBSD && !SANITIZER_OPENBSD
+#endif  // !SANITIZER_FREEBSD
 
 struct DlIteratePhdrData {
   InternalMmapVectorNoCtor<LoadedModule> *modules;
@@ -680,7 +667,7 @@ uptr GetRSS() {
 // sysconf(_SC_NPROCESSORS_{CONF,ONLN}) cannot be used on most platforms as
 // they allocate memory.
 u32 GetNumberOfCPUs() {
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD
   u32 ncpu;
   int req[2];
   uptr len = sizeof(ncpu);
@@ -837,7 +824,6 @@ u64 MonotonicNanoTime() {
 }
 #endif  // SANITIZER_LINUX && !SANITIZER_GO
 
-#if !SANITIZER_OPENBSD
 void ReExec() {
   const char *pathname = "/proc/self/exe";
 
@@ -869,7 +855,6 @@ void ReExec() {
   Printf("execve failed, errno %d\n", rverrno);
   Die();
 }
-#endif  // !SANITIZER_OPENBSD
 
 void UnmapFromTo(uptr from, uptr to) {
   if (to == from)

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_openbsd.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_openbsd.cpp
index 195901714b19..e69de29bb2d1 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_openbsd.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_openbsd.cpp
@@ -1,119 +0,0 @@
-//===-- sanitizer_openbsd.cpp ---------------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is shared between various sanitizers' runtime libraries and
-// implements Solaris-specific functions.
-//===----------------------------------------------------------------------===//
-
-#include "sanitizer_platform.h"
-#if SANITIZER_OPENBSD
-
-#include <stdio.h>
-
-#include "sanitizer_common.h"
-#include "sanitizer_flags.h"
-#include "sanitizer_internal_defs.h"
-#include "sanitizer_libc.h"
-#include "sanitizer_placement_new.h"
-#include "sanitizer_platform_limits_posix.h"
-#include "sanitizer_procmaps.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <pthread.h>
-#include <sched.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <sys/shm.h>
-#include <sys/sysctl.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-extern char **environ;
-
-namespace __sanitizer {
-
-uptr internal_mmap(void *addr, size_t length, int prot, int flags, int fd,
-                   u64 offset) {
-  return (uptr)mmap(addr, length, prot, flags, fd, offset);
-}
-
-uptr internal_munmap(void *addr, uptr length) { return munmap(addr, length); }
-
-int internal_mprotect(void *addr, uptr length, int prot) {
-  return mprotect(addr, length, prot);
-}
-
-int internal_madvise(uptr addr, uptr length, int advice) {
-  return madvise((void *)addr, length, advice);
-}
-
-int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp,
-                          const void *newp, uptr newlen) {
-  Printf("internal_sysctlbyname not implemented for OpenBSD");
-  Die();
-  return 0;
-}
-
-uptr ReadBinaryName(/*out*/char *buf, uptr buf_len) {
-  // On OpenBSD we cannot get the full path
-  struct kinfo_proc kp;
-  uptr kl;
-  const int Mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid()};
-  if (internal_sysctl(Mib, ARRAY_SIZE(Mib), &kp, &kl, NULL, 0) != -1)
-    return internal_snprintf(buf,
-                             (KI_MAXCOMLEN < buf_len ? KI_MAXCOMLEN : buf_len),
-                             "%s", kp.p_comm);
-  return (uptr)0;
-}
-
-static void GetArgsAndEnv(char ***argv, char ***envp) {
-  uptr nargv;
-  uptr nenv;
-  int argvmib[4] = {CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ARGV};
-  int envmib[4] = {CTL_KERN, KERN_PROC_ARGS, getpid(), KERN_PROC_ENV};
-  if (internal_sysctl(argvmib, 4, NULL, &nargv, NULL, 0) == -1) {
-    Printf("sysctl KERN_PROC_NARGV failed\n");
-    Die();
-  }
-  if (internal_sysctl(envmib, 4, NULL, &nenv, NULL, 0) == -1) {
-    Printf("sysctl KERN_PROC_NENV failed\n");
-    Die();
-  }
-  if (internal_sysctl(argvmib, 4, &argv, &nargv, NULL, 0) == -1) {
-    Printf("sysctl KERN_PROC_ARGV failed\n");
-    Die();
-  }
-  if (internal_sysctl(envmib, 4, &envp, &nenv, NULL, 0) == -1) {
-    Printf("sysctl KERN_PROC_ENV failed\n");
-    Die();
-  }
-}
-
-char **GetArgv() {
-  char **argv, **envp;
-  GetArgsAndEnv(&argv, &envp);
-  return argv;
-}
-
-char **GetEnviron() {
-  char **argv, **envp;
-  GetArgsAndEnv(&argv, &envp);
-  return envp;
-}
-
-void ReExec() {
-  UNIMPLEMENTED();
-}
-
-}  // namespace __sanitizer
-
-#endif  // SANITIZER_OPENBSD

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
index 5547c68bc517..657265f49425 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
@@ -13,7 +13,7 @@
 #define SANITIZER_PLATFORM_H
 
 #if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && \
-  !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(_WIN32) && \
+  !defined(__APPLE__) && !defined(_WIN32) && \
   !defined(__Fuchsia__) && !defined(__rtems__) && \
   !(defined(__sun__) && defined(__svr4__))
 # error "This operating system is not supported"
@@ -37,12 +37,6 @@
 # define SANITIZER_NETBSD 0
 #endif
 
-#if defined(__OpenBSD__)
-# define SANITIZER_OPENBSD 1
-#else
-# define SANITIZER_OPENBSD 0
-#endif
-
 #if defined(__sun__) && defined(__svr4__)
 # define SANITIZER_SOLARIS 1
 #else
@@ -112,7 +106,7 @@
 
 #define SANITIZER_POSIX \
   (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC || \
-    SANITIZER_NETBSD || SANITIZER_OPENBSD || SANITIZER_SOLARIS)
+    SANITIZER_NETBSD || SANITIZER_SOLARIS)
 
 #if __LP64__ || defined(_WIN64)
 #  define SANITIZER_WORDSIZE 64
@@ -339,7 +333,7 @@
 #endif
 
 #if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_NETBSD || \
-  SANITIZER_OPENBSD || SANITIZER_SOLARIS
+  SANITIZER_SOLARIS
 # define SANITIZER_MADVISE_DONTNEED MADV_FREE
 #else
 # define SANITIZER_MADVISE_DONTNEED MADV_DONTNEED

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
index 37f178a6f573..80a6b5990f24 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -36,7 +36,6 @@
 #if SI_POSIX
 # include "sanitizer_platform_limits_freebsd.h"
 # include "sanitizer_platform_limits_netbsd.h"
-# include "sanitizer_platform_limits_openbsd.h"
 # include "sanitizer_platform_limits_posix.h"
 # include "sanitizer_platform_limits_solaris.h"
 #endif
@@ -65,12 +64,6 @@
 # define SI_NETBSD 0
 #endif
 
-#if SANITIZER_OPENBSD
-#define SI_OPENBSD 1
-#else
-#define SI_OPENBSD 0
-#endif
-
 #if SANITIZER_LINUX
 # define SI_LINUX 1
 #else
@@ -164,7 +157,7 @@
 #define SANITIZER_INTERCEPT_MEMCMP SI_NOT_FUCHSIA
 #define SANITIZER_INTERCEPT_BCMP \
   SANITIZER_INTERCEPT_MEMCMP &&  \
-      ((SI_POSIX && _GNU_SOURCE) || SI_NETBSD || SI_OPENBSD || SI_FREEBSD)
+      ((SI_POSIX && _GNU_SOURCE) || SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT_STRNDUP SI_POSIX
 #define SANITIZER_INTERCEPT___STRNDUP SI_LINUX_NOT_FREEBSD
 #if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \
@@ -178,7 +171,7 @@
 #define SANITIZER_INTERCEPT_MEMMEM (SI_POSIX && !SI_MAC_DEPLOYMENT_BELOW_10_7)
 #define SANITIZER_INTERCEPT_MEMCHR SI_NOT_FUCHSIA
 #define SANITIZER_INTERCEPT_MEMRCHR \
-  (SI_FREEBSD || SI_LINUX || SI_NETBSD || SI_OPENBSD)
+  (SI_FREEBSD || SI_LINUX || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_READ SI_POSIX
 #define SANITIZER_INTERCEPT_PREAD SI_POSIX
@@ -198,7 +191,7 @@
 #define SANITIZER_INTERCEPT_WRITEV SI_POSIX
 
 #define SANITIZER_INTERCEPT_PREADV \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID)
 #define SANITIZER_INTERCEPT_PWRITEV SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_PREADV64 SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_PWRITEV64 SI_LINUX_NOT_ANDROID
@@ -225,22 +218,22 @@
 
 #define SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS SI_POSIX
 #define SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS                            \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_GETPWENT                                          \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_FGETGRENT_R                                       \
-  (SI_FREEBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_FGETPWENT SI_LINUX_NOT_ANDROID || SI_SOLARIS
 #define SANITIZER_INTERCEPT_GETPWENT_R \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_FGETPWENT_R \
-  (SI_FREEBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_SETPWENT \
   (SI_MAC || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_CLOCK_GETTIME \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_CLOCK_GETCPUCLOCKID SI_LINUX
 #define SANITIZER_INTERCEPT_GETITIMER SI_POSIX
 #define SANITIZER_INTERCEPT_TIME SI_POSIX
@@ -248,7 +241,7 @@
 #define SANITIZER_INTERCEPT_GLOB64 SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_WAIT SI_POSIX
 #define SANITIZER_INTERCEPT_INET SI_POSIX
-#define SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM (SI_POSIX && !SI_OPENBSD)
+#define SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM SI_POSIX
 #define SANITIZER_INTERCEPT_GETADDRINFO SI_POSIX
 #define SANITIZER_INTERCEPT_GETNAMEINFO SI_POSIX
 #define SANITIZER_INTERCEPT_GETSOCKNAME SI_POSIX
@@ -265,7 +258,7 @@
 #define SANITIZER_INTERCEPT_GETSOCKOPT SI_POSIX
 #define SANITIZER_INTERCEPT_ACCEPT SI_POSIX
 #define SANITIZER_INTERCEPT_ACCEPT4 \
-  (SI_LINUX_NOT_ANDROID || SI_NETBSD || SI_OPENBSD)
+  (SI_LINUX_NOT_ANDROID || SI_NETBSD)
 #define SANITIZER_INTERCEPT_PACCEPT SI_NETBSD
 #define SANITIZER_INTERCEPT_MODF SI_POSIX
 #define SANITIZER_INTERCEPT_RECVMSG SI_POSIX
@@ -300,20 +293,20 @@
 #define SANITIZER_INTERCEPT_WCSXFRM SI_POSIX
 #define SANITIZER_INTERCEPT___WCSXFRM_L SI_LINUX
 #define SANITIZER_INTERCEPT_WCSNRTOMBS                                        \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_WCRTOMB                                           \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_WCTOMB                                           \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_TCGETATTR SI_LINUX_NOT_ANDROID || SI_SOLARIS
 #define SANITIZER_INTERCEPT_REALPATH SI_POSIX
 #define SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME \
   (SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_CONFSTR                                           \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_SCHED_GETAFFINITY SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_SCHED_GETPARAM SI_LINUX_NOT_ANDROID || SI_SOLARIS
@@ -321,7 +314,7 @@
 #define SANITIZER_INTERCEPT_STRERROR_R SI_POSIX
 #define SANITIZER_INTERCEPT_XPG_STRERROR_R SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_SCANDIR \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_SCANDIR64 SI_LINUX_NOT_ANDROID || SI_SOLARIS32
 #define SANITIZER_INTERCEPT_GETGROUPS SI_POSIX
 #define SANITIZER_INTERCEPT_POLL SI_POSIX
@@ -339,7 +332,7 @@
 #define SANITIZER_INTERCEPT_SIGPROCMASK SI_POSIX
 #define SANITIZER_INTERCEPT_PTHREAD_SIGMASK SI_POSIX
 #define SANITIZER_INTERCEPT_BACKTRACE \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_GETMNTENT SI_LINUX
 #define SANITIZER_INTERCEPT_GETMNTENT_R SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_STATFS \
@@ -347,25 +340,25 @@
 #define SANITIZER_INTERCEPT_STATFS64 \
   (((SI_MAC && !TARGET_CPU_ARM64) && !SI_IOS) || SI_LINUX_NOT_ANDROID)
 #define SANITIZER_INTERCEPT_STATVFS \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID)
 #define SANITIZER_INTERCEPT_STATVFS64 SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_INITGROUPS SI_POSIX
-#define SANITIZER_INTERCEPT_ETHER_NTOA_ATON (SI_POSIX && !SI_OPENBSD)
+#define SANITIZER_INTERCEPT_ETHER_NTOA_ATON SI_POSIX
 #define SANITIZER_INTERCEPT_ETHER_HOST \
   (SI_FREEBSD || SI_MAC || SI_LINUX_NOT_ANDROID)
 #define SANITIZER_INTERCEPT_ETHER_R (SI_FREEBSD || SI_LINUX_NOT_ANDROID)
 #define SANITIZER_INTERCEPT_SHMCTL                                       \
   (((SI_FREEBSD || SI_LINUX_NOT_ANDROID) && SANITIZER_WORDSIZE == 64) || \
-   SI_NETBSD || SI_OPENBSD || SI_SOLARIS)  // NOLINT
+   SI_NETBSD || SI_SOLARIS)  // NOLINT
 #define SANITIZER_INTERCEPT_RANDOM_R SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_PTHREAD_ATTR_GET SI_POSIX
 #define SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED \
   (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP SI_LINUX_NOT_ANDROID
-#define SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED (SI_POSIX && !SI_OPENBSD)
+#define SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED SI_POSIX
 #define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED \
-  (SI_POSIX && !SI_NETBSD && !SI_OPENBSD)
-#define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE (SI_POSIX && !SI_OPENBSD)
+  (SI_POSIX && !SI_NETBSD)
+#define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE SI_POSIX
 #define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL \
   (SI_MAC || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING \
@@ -374,14 +367,14 @@
   (SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED \
-  (SI_POSIX && !SI_NETBSD && !SI_OPENBSD)
+  (SI_POSIX && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED \
-  (SI_POSIX && !SI_NETBSD && !SI_OPENBSD)
+  (SI_POSIX && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK \
   (SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED \
-  (SI_LINUX_NOT_ANDROID && !SI_NETBSD && !SI_OPENBSD)
+  (SI_LINUX_NOT_ANDROID && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_THR_EXIT SI_FREEBSD
 #define SANITIZER_INTERCEPT_TMPNAM SI_POSIX
 #define SANITIZER_INTERCEPT_TMPNAM_R SI_LINUX_NOT_ANDROID || SI_SOLARIS
@@ -399,38 +392,38 @@
 #define SANITIZER_INTERCEPT_LGAMMAL_R SI_LINUX_NOT_ANDROID || SI_SOLARIS
 #define SANITIZER_INTERCEPT_DRAND48_R SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_RAND_R                                            \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
+  (SI_FREEBSD || SI_NETBSD || SI_MAC || SI_LINUX_NOT_ANDROID || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_ICONV \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_TIMES SI_POSIX
 
 // FIXME: getline seems to be available on OSX 10.7
 #define SANITIZER_INTERCEPT_GETLINE \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 
 #define SANITIZER_INTERCEPT__EXIT \
-  (SI_LINUX || SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_MAC || SI_SOLARIS)
+  (SI_LINUX || SI_FREEBSD || SI_NETBSD || SI_MAC || SI_SOLARIS)
 
 #define SANITIZER_INTERCEPT_PTHREAD_MUTEX SI_POSIX
 #define SANITIZER_INTERCEPT___PTHREAD_MUTEX SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT___LIBC_MUTEX SI_NETBSD
 #define SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP \
   (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 
 #define SANITIZER_INTERCEPT_TLS_GET_ADDR \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_SOLARIS)
 
 #define SANITIZER_INTERCEPT_LISTXATTR SI_LINUX
 #define SANITIZER_INTERCEPT_GETXATTR SI_LINUX
 #define SANITIZER_INTERCEPT_GETRESID SI_LINUX
 #define SANITIZER_INTERCEPT_GETIFADDRS                                        \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_IF_INDEXTONAME                                    \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
   SI_SOLARIS)
 #define SANITIZER_INTERCEPT_CAPGET SI_LINUX_NOT_ANDROID
 #if SI_LINUX && defined(__arm__)
@@ -441,28 +434,28 @@
 #define SANITIZER_INTERCEPT___BZERO SI_MAC || SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_BZERO SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_FTIME \
-  (!SI_FREEBSD && !SI_NETBSD && !SI_OPENBSD && SI_POSIX)
+  (!SI_FREEBSD && !SI_NETBSD && SI_POSIX)
 #define SANITIZER_INTERCEPT_XDR SI_LINUX_NOT_ANDROID || SI_SOLARIS
 #define SANITIZER_INTERCEPT_XDRREC SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_TSEARCH \
-  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_NETBSD || SI_OPENBSD || SI_SOLARIS)
+  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_LIBIO_INTERNALS SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_FOPEN SI_POSIX
 #define SANITIZER_INTERCEPT_FOPEN64 SI_LINUX_NOT_ANDROID || SI_SOLARIS32
 #define SANITIZER_INTERCEPT_OPEN_MEMSTREAM \
-  (SI_LINUX_NOT_ANDROID || SI_NETBSD || SI_OPENBSD || SI_SOLARIS)
+  (SI_LINUX_NOT_ANDROID || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_OBSTACK SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_FFLUSH SI_POSIX
 #define SANITIZER_INTERCEPT_FCLOSE SI_POSIX
 
 #ifndef SANITIZER_INTERCEPT_DLOPEN_DLCLOSE
 #define SANITIZER_INTERCEPT_DLOPEN_DLCLOSE                                    \
-  (SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
+  (SI_FREEBSD || SI_NETBSD || SI_LINUX_NOT_ANDROID || SI_MAC || \
   SI_SOLARIS)
 #endif
 
 #define SANITIZER_INTERCEPT_GETPASS \
-  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_NETBSD || SI_OPENBSD)
+  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_NETBSD)
 #define SANITIZER_INTERCEPT_TIMERFD SI_LINUX_NOT_ANDROID
 
 #define SANITIZER_INTERCEPT_MLOCKX SI_POSIX
@@ -471,10 +464,10 @@
   (SI_LINUX || SI_FREEBSD || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PTHREAD_SETCANCEL SI_POSIX
 #define SANITIZER_INTERCEPT_MINCORE \
-  (SI_LINUX || SI_NETBSD || SI_OPENBSD || SI_SOLARIS)
+  (SI_LINUX || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_PROCESS_VM_READV SI_LINUX
 #define SANITIZER_INTERCEPT_CTERMID \
-  (SI_LINUX || SI_MAC || SI_FREEBSD || SI_NETBSD || SI_OPENBSD || SI_SOLARIS)
+  (SI_LINUX || SI_MAC || SI_FREEBSD || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_CTERMID_R (SI_MAC || SI_FREEBSD || SI_SOLARIS)
 
 #define SANITIZER_INTERCEPTOR_HOOKS \
@@ -484,7 +477,7 @@
 #define SANITIZER_INTERCEPT_EVENTFD_READ_WRITE SI_LINUX
 
 #define SANITIZER_INTERCEPT_STAT \
-  (SI_FREEBSD || SI_MAC || SI_ANDROID || SI_NETBSD || SI_OPENBSD || SI_SOLARIS)
+  (SI_FREEBSD || SI_MAC || SI_ANDROID || SI_NETBSD || SI_SOLARIS)
 #define SANITIZER_INTERCEPT_LSTAT (SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT___XSTAT (!SANITIZER_INTERCEPT_STAT && SI_POSIX)
 #define SANITIZER_INTERCEPT___XSTAT64 SI_LINUX_NOT_ANDROID
@@ -497,41 +490,41 @@
   (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_GETLOADAVG \
-  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD || SI_OPENBSD)
+  (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_MMAP SI_POSIX
 #define SANITIZER_INTERCEPT_MMAP64 SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO                            \
-  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && !SI_OPENBSD && SI_NOT_FUCHSIA && \
+  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA && \
    SI_NOT_RTEMS && !SI_SOLARIS)  // NOLINT
 #define SANITIZER_INTERCEPT_MEMALIGN \
-  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && !SI_OPENBSD && SI_NOT_RTEMS)
+  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_RTEMS)
 #define SANITIZER_INTERCEPT_PVALLOC                                         \
-  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && !SI_OPENBSD && SI_NOT_FUCHSIA && \
+  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA && \
    SI_NOT_RTEMS && !SI_SOLARIS)  // NOLINT
 #define SANITIZER_INTERCEPT_CFREE                                           \
-  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && !SI_OPENBSD && SI_NOT_FUCHSIA && \
+  (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA && \
    SI_NOT_RTEMS && !SI_SOLARIS)  // NOLINT
 #define SANITIZER_INTERCEPT_REALLOCARRAY SI_POSIX
 #define SANITIZER_INTERCEPT_ALIGNED_ALLOC (!SI_MAC && SI_NOT_RTEMS)
 #define SANITIZER_INTERCEPT_MALLOC_USABLE_SIZE \
-  (!SI_MAC && !SI_OPENBSD && !SI_NETBSD)
+  (!SI_MAC && !SI_NETBSD)
 #define SANITIZER_INTERCEPT_MCHECK_MPROBE SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_WCSCAT SI_POSIX
 #define SANITIZER_INTERCEPT_WCSDUP SI_POSIX
 #define SANITIZER_INTERCEPT_SIGNAL_AND_SIGACTION (!SI_WINDOWS && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_BSD_SIGNAL SI_ANDROID
 
-#define SANITIZER_INTERCEPT_ACCT (SI_NETBSD || SI_OPENBSD || SI_FREEBSD)
+#define SANITIZER_INTERCEPT_ACCT (SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT_USER_FROM_UID SI_NETBSD
 #define SANITIZER_INTERCEPT_UID_FROM_USER SI_NETBSD
 #define SANITIZER_INTERCEPT_GROUP_FROM_GID SI_NETBSD
 #define SANITIZER_INTERCEPT_GID_FROM_GROUP SI_NETBSD
-#define SANITIZER_INTERCEPT_ACCESS (SI_NETBSD || SI_OPENBSD || SI_FREEBSD)
-#define SANITIZER_INTERCEPT_FACCESSAT (SI_NETBSD || SI_OPENBSD || SI_FREEBSD)
-#define SANITIZER_INTERCEPT_GETGROUPLIST (SI_NETBSD || SI_OPENBSD)
+#define SANITIZER_INTERCEPT_ACCESS (SI_NETBSD || SI_FREEBSD)
+#define SANITIZER_INTERCEPT_FACCESSAT (SI_NETBSD || SI_FREEBSD)
+#define SANITIZER_INTERCEPT_GETGROUPLIST SI_NETBSD
 #define SANITIZER_INTERCEPT_STRLCPY                                            \
-  (SI_NETBSD || SI_FREEBSD || SI_OPENBSD || SI_MAC || SI_ANDROID)
+  (SI_NETBSD || SI_FREEBSD || SI_MAC || SI_ANDROID)
 
 #define SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT SI_LINUX_NOT_ANDROID
 #define SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT SI_LINUX_NOT_ANDROID
@@ -546,7 +539,7 @@
 #define SANITIZER_INTERCEPT_READLINKAT \
   (SI_POSIX && !SI_MAC_DEPLOYMENT_BELOW_10_10)
 
-#define SANITIZER_INTERCEPT_DEVNAME (SI_NETBSD || SI_OPENBSD || SI_FREEBSD)
+#define SANITIZER_INTERCEPT_DEVNAME (SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT_DEVNAME_R (SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT_FGETLN (SI_NETBSD || SI_FREEBSD)
 #define SANITIZER_INTERCEPT_STRMODE (SI_NETBSD || SI_FREEBSD)

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.cpp
index 1420ecbfa568..e69de29bb2d1 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.cpp
@@ -1,279 +0,0 @@
-//===-- sanitizer_platform_limits_openbsd.cpp -----------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is a part of Sanitizer common code.
-//
-// Sizes and layouts of platform-specific NetBSD data structures.
-//===----------------------------------------------------------------------===//
-
-#include "sanitizer_platform.h"
-
-#if SANITIZER_OPENBSD
-#include <arpa/inet.h>
-#include <dirent.h>
-#include <glob.h>
-#include <grp.h>
-#include <ifaddrs.h>
-#include <limits.h>
-#include <link_elf.h>
-#include <sys/socket.h>
-#include <net/if.h>
-#include <net/ppp_defs.h>
-#include <net/route.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <netinet/ip_mroute.h>
-#include <poll.h>
-#include <pthread.h>
-#include <pwd.h>
-#include <semaphore.h>
-#include <signal.h>
-#include <soundcard.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/filio.h>
-#include <sys/ipc.h>
-#include <sys/mman.h>
-#include <sys/mount.h>
-#include <sys/msg.h>
-#include <sys/mtio.h>
-#include <sys/ptrace.h>
-#include <sys/resource.h>
-#include <sys/shm.h>
-#include <sys/signal.h>
-#include <sys/sockio.h>
-#include <sys/stat.h>
-#include <sys/statvfs.h>
-#include <sys/time.h>
-#include <sys/times.h>
-#include <sys/types.h>
-#include <sys/utsname.h>
-#include <term.h>
-#include <time.h>
-#include <utime.h>
-#include <utmp.h>
-#include <wchar.h>
-
-// Include these after system headers to avoid name clashes and ambiguities.
-#include "sanitizer_internal_defs.h"
-#include "sanitizer_platform_limits_openbsd.h"
-
-namespace __sanitizer {
-unsigned struct_utsname_sz = sizeof(struct utsname);
-unsigned struct_stat_sz = sizeof(struct stat);
-unsigned struct_rusage_sz = sizeof(struct rusage);
-unsigned struct_tm_sz = sizeof(struct tm);
-unsigned struct_passwd_sz = sizeof(struct passwd);
-unsigned struct_group_sz = sizeof(struct group);
-unsigned siginfo_t_sz = sizeof(siginfo_t);
-unsigned struct_sigaction_sz = sizeof(struct sigaction);
-unsigned struct_stack_t_sz = sizeof(stack_t);
-unsigned struct_itimerval_sz = sizeof(struct itimerval);
-unsigned pthread_t_sz = sizeof(pthread_t);
-unsigned pthread_mutex_t_sz = sizeof(pthread_mutex_t);
-unsigned pthread_cond_t_sz = sizeof(pthread_cond_t);
-unsigned pid_t_sz = sizeof(pid_t);
-unsigned timeval_sz = sizeof(timeval);
-unsigned uid_t_sz = sizeof(uid_t);
-unsigned gid_t_sz = sizeof(gid_t);
-unsigned mbstate_t_sz = sizeof(mbstate_t);
-unsigned sigset_t_sz = sizeof(sigset_t);
-unsigned struct_timezone_sz = sizeof(struct timezone);
-unsigned struct_tms_sz = sizeof(struct tms);
-unsigned struct_sched_param_sz = sizeof(struct sched_param);
-unsigned struct_sockaddr_sz = sizeof(struct sockaddr);
-unsigned struct_rlimit_sz = sizeof(struct rlimit);
-unsigned struct_timespec_sz = sizeof(struct timespec);
-unsigned struct_utimbuf_sz = sizeof(struct utimbuf);
-unsigned struct_itimerspec_sz = sizeof(struct itimerspec);
-unsigned struct_msqid_ds_sz = sizeof(struct msqid_ds);
-unsigned struct_statvfs_sz = sizeof(struct statvfs);
-
-const uptr sig_ign = (uptr)SIG_IGN;
-const uptr sig_dfl = (uptr)SIG_DFL;
-const uptr sig_err = (uptr)SIG_ERR;
-const uptr sa_siginfo = (uptr)SA_SIGINFO;
-
-int shmctl_ipc_stat = (int)IPC_STAT;
-
-unsigned struct_utmp_sz = sizeof(struct utmp);
-
-int map_fixed = MAP_FIXED;
-
-int af_inet = (int)AF_INET;
-int af_inet6 = (int)AF_INET6;
-
-uptr __sanitizer_in_addr_sz(int af) {
-  if (af == AF_INET)
-    return sizeof(struct in_addr);
-  else if (af == AF_INET6)
-    return sizeof(struct in6_addr);
-  else
-    return 0;
-}
-
-unsigned struct_ElfW_Phdr_sz = sizeof(Elf_Phdr);
-
-int glob_nomatch = GLOB_NOMATCH;
-int glob_altdirfunc = GLOB_ALTDIRFUNC;
-
-unsigned path_max = PATH_MAX;
-
-const int si_SEGV_MAPERR = SEGV_MAPERR;
-const int si_SEGV_ACCERR = SEGV_ACCERR;
-}  // namespace __sanitizer
-
-using namespace __sanitizer;
-
-COMPILER_CHECK(sizeof(__sanitizer_pthread_attr_t) >= sizeof(pthread_attr_t));
-
-COMPILER_CHECK(sizeof(socklen_t) == sizeof(unsigned));
-CHECK_TYPE_SIZE(pthread_key_t);
-
-CHECK_TYPE_SIZE(dl_phdr_info);
-CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_addr);
-CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_name);
-CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phdr);
-CHECK_SIZE_AND_OFFSET(dl_phdr_info, dlpi_phnum);
-
-CHECK_TYPE_SIZE(glob_t);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_pathc);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_pathv);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_offs);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_flags);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_closedir);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_readdir);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_opendir);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_lstat);
-CHECK_SIZE_AND_OFFSET(glob_t, gl_stat);
-
-CHECK_TYPE_SIZE(addrinfo);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_flags);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_family);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_socktype);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_protocol);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_addrlen);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_addr);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_canonname);
-CHECK_SIZE_AND_OFFSET(addrinfo, ai_next);
-
-CHECK_TYPE_SIZE(hostent);
-CHECK_SIZE_AND_OFFSET(hostent, h_name);
-CHECK_SIZE_AND_OFFSET(hostent, h_aliases);
-CHECK_SIZE_AND_OFFSET(hostent, h_addrtype);
-CHECK_SIZE_AND_OFFSET(hostent, h_length);
-CHECK_SIZE_AND_OFFSET(hostent, h_addr_list);
-
-CHECK_TYPE_SIZE(iovec);
-CHECK_SIZE_AND_OFFSET(iovec, iov_base);
-CHECK_SIZE_AND_OFFSET(iovec, iov_len);
-
-CHECK_TYPE_SIZE(msghdr);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_name);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_namelen);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_iov);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_iovlen);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_control);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_controllen);
-CHECK_SIZE_AND_OFFSET(msghdr, msg_flags);
-
-CHECK_TYPE_SIZE(cmsghdr);
-CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_len);
-CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_level);
-CHECK_SIZE_AND_OFFSET(cmsghdr, cmsg_type);
-
-COMPILER_CHECK(sizeof(__sanitizer_dirent) <= sizeof(dirent));
-CHECK_SIZE_AND_OFFSET(dirent, d_fileno);
-CHECK_SIZE_AND_OFFSET(dirent, d_off);
-CHECK_SIZE_AND_OFFSET(dirent, d_reclen);
-
-CHECK_TYPE_SIZE(ifconf);
-CHECK_SIZE_AND_OFFSET(ifconf, ifc_len);
-CHECK_SIZE_AND_OFFSET(ifconf, ifc_ifcu);
-
-CHECK_TYPE_SIZE(pollfd);
-CHECK_SIZE_AND_OFFSET(pollfd, fd);
-CHECK_SIZE_AND_OFFSET(pollfd, events);
-CHECK_SIZE_AND_OFFSET(pollfd, revents);
-
-CHECK_TYPE_SIZE(nfds_t);
-
-CHECK_TYPE_SIZE(sigset_t);
-
-COMPILER_CHECK(sizeof(__sanitizer_sigaction) == sizeof(struct sigaction));
-// Can't write checks for sa_handler and sa_sigaction due to them being
-// preprocessor macros.
-CHECK_STRUCT_SIZE_AND_OFFSET(sigaction, sa_mask);
-
-CHECK_TYPE_SIZE(tm);
-CHECK_SIZE_AND_OFFSET(tm, tm_sec);
-CHECK_SIZE_AND_OFFSET(tm, tm_min);
-CHECK_SIZE_AND_OFFSET(tm, tm_hour);
-CHECK_SIZE_AND_OFFSET(tm, tm_mday);
-CHECK_SIZE_AND_OFFSET(tm, tm_mon);
-CHECK_SIZE_AND_OFFSET(tm, tm_year);
-CHECK_SIZE_AND_OFFSET(tm, tm_wday);
-CHECK_SIZE_AND_OFFSET(tm, tm_yday);
-CHECK_SIZE_AND_OFFSET(tm, tm_isdst);
-CHECK_SIZE_AND_OFFSET(tm, tm_gmtoff);
-CHECK_SIZE_AND_OFFSET(tm, tm_zone);
-
-CHECK_TYPE_SIZE(ipc_perm);
-CHECK_SIZE_AND_OFFSET(ipc_perm, cuid);
-CHECK_SIZE_AND_OFFSET(ipc_perm, cgid);
-CHECK_SIZE_AND_OFFSET(ipc_perm, uid);
-CHECK_SIZE_AND_OFFSET(ipc_perm, gid);
-CHECK_SIZE_AND_OFFSET(ipc_perm, mode);
-CHECK_SIZE_AND_OFFSET(ipc_perm, seq);
-CHECK_SIZE_AND_OFFSET(ipc_perm, key);
-
-CHECK_TYPE_SIZE(shmid_ds);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_perm);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_segsz);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_atime);
-CHECK_SIZE_AND_OFFSET(shmid_ds, __shm_atimensec);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_dtime);
-CHECK_SIZE_AND_OFFSET(shmid_ds, __shm_dtimensec);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_ctime);
-CHECK_SIZE_AND_OFFSET(shmid_ds, __shm_ctimensec);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_cpid);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_lpid);
-CHECK_SIZE_AND_OFFSET(shmid_ds, shm_nattch);
-
-CHECK_TYPE_SIZE(clock_t);
-
-CHECK_TYPE_SIZE(ifaddrs);
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_next);
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_name);
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_addr);
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_netmask);
-// Compare against the union, because we can't reach into the union in a
-// compliant way.
-#ifdef ifa_dstaddr
-#undef ifa_dstaddr
-#endif
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_dstaddr);
-CHECK_SIZE_AND_OFFSET(ifaddrs, ifa_data);
-
-CHECK_TYPE_SIZE(passwd);
-CHECK_SIZE_AND_OFFSET(passwd, pw_name);
-CHECK_SIZE_AND_OFFSET(passwd, pw_passwd);
-CHECK_SIZE_AND_OFFSET(passwd, pw_uid);
-CHECK_SIZE_AND_OFFSET(passwd, pw_gid);
-CHECK_SIZE_AND_OFFSET(passwd, pw_dir);
-CHECK_SIZE_AND_OFFSET(passwd, pw_shell);
-
-CHECK_SIZE_AND_OFFSET(passwd, pw_gecos);
-
-CHECK_TYPE_SIZE(group);
-CHECK_SIZE_AND_OFFSET(group, gr_name);
-CHECK_SIZE_AND_OFFSET(group, gr_passwd);
-CHECK_SIZE_AND_OFFSET(group, gr_gid);
-CHECK_SIZE_AND_OFFSET(group, gr_mem);
-
-#endif  // SANITIZER_OPENBSD

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
index 8a1948723605..e69de29bb2d1 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_limits_openbsd.h
@@ -1,382 +0,0 @@
-//===-- sanitizer_platform_limits_openbsd.h -------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file is a part of Sanitizer common code.
-//
-// Sizes and layouts of platform-specific OpenBSD data structures.
-//===----------------------------------------------------------------------===//
-
-#ifndef SANITIZER_PLATFORM_LIMITS_OPENBSD_H
-#define SANITIZER_PLATFORM_LIMITS_OPENBSD_H
-
-#if SANITIZER_OPENBSD
-
-#include "sanitizer_internal_defs.h"
-#include "sanitizer_platform.h"
-
-#define _GET_LINK_MAP_BY_DLOPEN_HANDLE(handle, shift) \
-  ((link_map *)((handle) == nullptr ? nullptr : ((char *)(handle) + (shift))))
-
-#if defined(__x86_64__)
-#define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) \
-  _GET_LINK_MAP_BY_DLOPEN_HANDLE(handle, 312)
-#elif defined(__i386__)
-#define GET_LINK_MAP_BY_DLOPEN_HANDLE(handle) \
-  _GET_LINK_MAP_BY_DLOPEN_HANDLE(handle, 164)
-#endif
-
-#define RLIMIT_AS RLIMIT_DATA
-
-namespace __sanitizer {
-extern unsigned struct_utsname_sz;
-extern unsigned struct_stat_sz;
-extern unsigned struct_rusage_sz;
-extern unsigned siginfo_t_sz;
-extern unsigned struct_itimerval_sz;
-extern unsigned pthread_t_sz;
-extern unsigned pthread_mutex_t_sz;
-extern unsigned pthread_cond_t_sz;
-extern unsigned pid_t_sz;
-extern unsigned timeval_sz;
-extern unsigned uid_t_sz;
-extern unsigned gid_t_sz;
-extern unsigned mbstate_t_sz;
-extern unsigned struct_timezone_sz;
-extern unsigned struct_tms_sz;
-extern unsigned struct_itimerspec_sz;
-extern unsigned struct_sigevent_sz;
-extern unsigned struct_stack_t_sz;
-extern unsigned struct_statfs_sz;
-extern unsigned struct_sockaddr_sz;
-
-extern unsigned struct_rlimit_sz;
-extern unsigned struct_utimbuf_sz;
-extern unsigned struct_timespec_sz;
-
-struct __sanitizer_iocb {
-  u64 aio_offset;
-  uptr aio_buf;
-  long aio_nbytes;
-  u32 aio_fildes;
-  u32 aio_lio_opcode;
-  long aio_reqprio;
-#if SANITIZER_WORDSIZE == 64
-  u8 aio_sigevent[32];
-#else
-  u8 aio_sigevent[20];
-#endif
-  u32 _state;
-  u32 _errno;
-  long _retval;
-};
-
-struct __sanitizer___sysctl_args {
-  int *name;
-  int nlen;
-  void *oldval;
-  uptr *oldlenp;
-  void *newval;
-  uptr newlen;
-};
-
-struct __sanitizer_sem_t {
-  uptr data[5];
-};
-
-struct __sanitizer_ipc_perm {
-  u32 cuid;
-  u32 cgid;
-  u32 uid;
-  u32 gid;
-  u32 mode;
-  unsigned short seq;
-  long key;
-};
-
-struct __sanitizer_shmid_ds {
-  __sanitizer_ipc_perm shm_perm;
-  int shm_segsz;
-  u32 shm_lpid;
-  u32 shm_cpid;
-  short shm_nattch;
-  u64 shm_atime;
-  long __shm_atimensec;
-  u64 shm_dtime;
-  long __shm_dtimensec;
-  u64 shm_ctime;
-  long __shm_ctimensec;
-  void *_shm_internal;
-};
-
-extern unsigned struct_msqid_ds_sz;
-extern unsigned struct_mq_attr_sz;
-extern unsigned struct_timex_sz;
-extern unsigned struct_statvfs_sz;
-
-struct __sanitizer_iovec {
-  void *iov_base;
-  uptr iov_len;
-};
-
-struct __sanitizer_ifaddrs {
-  struct __sanitizer_ifaddrs *ifa_next;
-  char *ifa_name;
-  unsigned int ifa_flags;
-  struct __sanitizer_sockaddr *ifa_addr;     // (struct sockaddr *)
-  struct __sanitizer_sockaddr *ifa_netmask;  // (struct sockaddr *)
-  struct __sanitizer_sockaddr *ifa_dstaddr;  // (struct sockaddr *)
-  void *ifa_data;
-};
-
-typedef unsigned __sanitizer_pthread_key_t;
-
-typedef long long __sanitizer_time_t;
-typedef int __sanitizer_suseconds_t;
-
-struct __sanitizer_timeval {
-  __sanitizer_time_t tv_sec;
-  __sanitizer_suseconds_t tv_usec;
-};
-
-struct __sanitizer_itimerval {
-  struct __sanitizer_timeval it_interval;
-  struct __sanitizer_timeval it_value;
-};
-
-struct __sanitizer_passwd {
-  char *pw_name;
-  char *pw_passwd;
-  int pw_uid;
-  int pw_gid;
-  __sanitizer_time_t pw_change;
-  char *pw_class;
-  char *pw_gecos;
-  char *pw_dir;
-  char *pw_shell;
-  __sanitizer_time_t pw_expire;
-};
-
-struct __sanitizer_group {
-  char *gr_name;
-  char *gr_passwd;
-  int gr_gid;
-  char **gr_mem;
-};
-
-struct __sanitizer_ether_addr {
-  u8 octet[6];
-};
-
-struct __sanitizer_tm {
-  int tm_sec;
-  int tm_min;
-  int tm_hour;
-  int tm_mday;
-  int tm_mon;
-  int tm_year;
-  int tm_wday;
-  int tm_yday;
-  int tm_isdst;
-  long int tm_gmtoff;
-  const char *tm_zone;
-};
-
-struct __sanitizer_msghdr {
-  void *msg_name;
-  unsigned msg_namelen;
-  struct __sanitizer_iovec *msg_iov;
-  unsigned msg_iovlen;
-  void *msg_control;
-  unsigned msg_controllen;
-  int msg_flags;
-};
-struct __sanitizer_cmsghdr {
-  unsigned cmsg_len;
-  int cmsg_level;
-  int cmsg_type;
-};
-
-struct __sanitizer_dirent {
-  u64 d_fileno;
-  u64 d_off;
-  u16 d_reclen;
-};
-
-typedef u64 __sanitizer_clock_t;
-typedef u32 __sanitizer_clockid_t;
-
-typedef u32 __sanitizer___kernel_uid_t;
-typedef u32 __sanitizer___kernel_gid_t;
-typedef u64 __sanitizer___kernel_off_t;
-typedef struct {
-  u32 fds_bits[8];
-} __sanitizer___kernel_fd_set;
-
-typedef struct {
-  unsigned int pta_magic;
-  int pta_flags;
-  void *pta_private;
-} __sanitizer_pthread_attr_t;
-
-typedef unsigned int __sanitizer_sigset_t;
-
-struct __sanitizer_siginfo {
-  // The size is determined by looking at sizeof of real siginfo_t on linux.
-  u64 opaque[128 / sizeof(u64)];
-};
-
-using __sanitizer_sighandler_ptr = void (*)(int sig);
-using __sanitizer_sigactionhandler_ptr = void (*)(int sig,
-                                                  __sanitizer_siginfo *siginfo,
-                                                  void *uctx);
-
-struct __sanitizer_sigaction {
-  union {
-    __sanitizer_sighandler_ptr handler;
-    __sanitizer_sigactionhandler_ptr sigaction;
-  };
-  __sanitizer_sigset_t sa_mask;
-  int sa_flags;
-};
-
-typedef __sanitizer_sigset_t __sanitizer_kernel_sigset_t;
-
-struct __sanitizer_kernel_sigaction_t {
-  union {
-    void (*handler)(int signo);
-    void (*sigaction)(int signo, void *info, void *ctx);
-  };
-  unsigned long sa_flags;
-  void (*sa_restorer)(void);
-  __sanitizer_kernel_sigset_t sa_mask;
-};
-
-extern const uptr sig_ign;
-extern const uptr sig_dfl;
-extern const uptr sig_err;
-extern const uptr sa_siginfo;
-
-extern int af_inet;
-extern int af_inet6;
-uptr __sanitizer_in_addr_sz(int af);
-
-struct __sanitizer_dl_phdr_info {
-#if SANITIZER_WORDSIZE == 64
-  u64 dlpi_addr;
-#else
-  u32 dlpi_addr;
-#endif
-  const char *dlpi_name;
-  const void *dlpi_phdr;
-#if SANITIZER_WORDSIZE == 64
-  u32 dlpi_phnum;
-#else
-  u16 dlpi_phnum;
-#endif
-};
-
-extern unsigned struct_ElfW_Phdr_sz;
-
-struct __sanitizer_addrinfo {
-  int ai_flags;
-  int ai_family;
-  int ai_socktype;
-  int ai_protocol;
-  unsigned ai_addrlen;
-  struct __sanitizer_sockaddr *ai_addr;
-  char *ai_canonname;
-  struct __sanitizer_addrinfo *ai_next;
-};
-
-struct __sanitizer_hostent {
-  char *h_name;
-  char **h_aliases;
-  int h_addrtype;
-  int h_length;
-  char **h_addr_list;
-};
-
-struct __sanitizer_pollfd {
-  int fd;
-  short events;
-  short revents;
-};
-
-typedef unsigned __sanitizer_nfds_t;
-
-struct __sanitizer_glob_t {
-  int gl_pathc;
-  int gl_matchc;
-  int gl_offs;
-  int gl_flags;
-  char **gl_pathv;
-  void **gl_statv;
-  int (*gl_errfunc)(const char *, int);
-  void (*gl_closedir)(void *dirp);
-  struct dirent *(*gl_readdir)(void *dirp);
-  void *(*gl_opendir)(const char *);
-  int (*gl_lstat)(const char *, void * /* struct stat* */);
-  int (*gl_stat)(const char *, void * /* struct stat* */);
-};
-
-extern int glob_nomatch;
-extern int glob_altdirfunc;
-
-extern unsigned path_max;
-
-typedef char __sanitizer_FILE;
-#define SANITIZER_HAS_STRUCT_FILE 0
-
-extern int shmctl_ipc_stat;
-
-// This simplifies generic code
-#define struct_shminfo_sz -1
-#define struct_shm_info_sz -1
-#define shmctl_shm_stat -1
-#define shmctl_ipc_info -1
-#define shmctl_shm_info -1
-
-extern unsigned struct_utmp_sz;
-extern unsigned struct_utmpx_sz;
-
-extern int map_fixed;
-
-// ioctl arguments
-struct __sanitizer_ifconf {
-  int ifc_len;
-  union {
-    void *ifcu_req;
-  } ifc_ifcu;
-};
-
-extern const int si_SEGV_MAPERR;
-extern const int si_SEGV_ACCERR;
-}  // namespace __sanitizer
-
-#define CHECK_TYPE_SIZE(TYPE) \
-  COMPILER_CHECK(sizeof(__sanitizer_##TYPE) == sizeof(TYPE))
-
-#define CHECK_SIZE_AND_OFFSET(CLASS, MEMBER)                      \
-  COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *)NULL)->MEMBER) == \
-                 sizeof(((CLASS *)NULL)->MEMBER));                \
-  COMPILER_CHECK(offsetof(__sanitizer_##CLASS, MEMBER) ==         \
-                 offsetof(CLASS, MEMBER))
-
-// For sigaction, which is a function and struct at the same time,
-// and thus requires explicit "struct" in sizeof() expression.
-#define CHECK_STRUCT_SIZE_AND_OFFSET(CLASS, MEMBER)                      \
-  COMPILER_CHECK(sizeof(((struct __sanitizer_##CLASS *)NULL)->MEMBER) == \
-                 sizeof(((struct CLASS *)NULL)->MEMBER));                \
-  COMPILER_CHECK(offsetof(struct __sanitizer_##CLASS, MEMBER) ==         \
-                 offsetof(struct CLASS, MEMBER))
-
-#define SIGACTION_SYMNAME __sigaction14
-
-#endif  // SANITIZER_OPENBSD
-
-#endif

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_posix.h b/compiler-rt/lib/sanitizer_common/sanitizer_posix.h
index 66bcaf4fd2e4..e1a2b48e5cd8 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_posix.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_posix.h
@@ -17,7 +17,6 @@
 #include "sanitizer_internal_defs.h"
 #include "sanitizer_platform_limits_freebsd.h"
 #include "sanitizer_platform_limits_netbsd.h"
-#include "sanitizer_platform_limits_openbsd.h"
 #include "sanitizer_platform_limits_posix.h"
 #include "sanitizer_platform_limits_solaris.h"
 

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp
index 37aaec362dd2..d29438cf9dbd 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_posix_libcdep.cpp
@@ -18,7 +18,6 @@
 #include "sanitizer_common.h"
 #include "sanitizer_flags.h"
 #include "sanitizer_platform_limits_netbsd.h"
-#include "sanitizer_platform_limits_openbsd.h"
 #include "sanitizer_platform_limits_posix.h"
 #include "sanitizer_platform_limits_solaris.h"
 #include "sanitizer_posix.h"

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
index 665ed45fa93e..a56640db43e8 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps.h
@@ -16,7 +16,7 @@
 #include "sanitizer_platform.h"
 
 #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD || SANITIZER_MAC || SANITIZER_SOLARIS ||  \
+    SANITIZER_MAC || SANITIZER_SOLARIS ||  \
     SANITIZER_FUCHSIA
 
 #include "sanitizer_common.h"

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_bsd.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_bsd.cpp
index 02ff7c0e91a8..1f489b71ad99 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_bsd.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_bsd.cpp
@@ -7,11 +7,11 @@
 //===----------------------------------------------------------------------===//
 //
 // Information about the process mappings
-// (FreeBSD, OpenBSD and NetBSD-specific parts).
+// (FreeBSD and NetBSD-specific parts).
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_platform.h"
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD
 #include "sanitizer_common.h"
 #if SANITIZER_FREEBSD
 #include "sanitizer_freebsd.h"
@@ -28,11 +28,6 @@
 #endif
 
 #include <limits.h>
-#if SANITIZER_OPENBSD
-#define KVME_PROT_READ KVE_PROT_READ
-#define KVME_PROT_WRITE KVE_PROT_WRITE
-#define KVME_PROT_EXEC KVE_PROT_EXEC
-#endif
 
 // Fix 'kinfo_vmentry' definition on FreeBSD prior v9.2 in 32-bit mode.
 #if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32)
@@ -51,10 +46,6 @@ void ReadProcMaps(ProcSelfMapsBuff *proc_maps) {
     KERN_PROC,
     KERN_PROC_VMMAP,
     getpid()
-#elif SANITIZER_OPENBSD
-    CTL_KERN,
-    KERN_PROC_VMMAP,
-    getpid()
 #elif SANITIZER_NETBSD
     CTL_VM,
     VM_PROC,
@@ -71,28 +62,12 @@ void ReadProcMaps(ProcSelfMapsBuff *proc_maps) {
   CHECK_EQ(Err, 0);
   CHECK_GT(Size, 0);
 
-#if !SANITIZER_OPENBSD
   size_t MmapedSize = Size * 4 / 3;
   void *VmMap = MmapOrDie(MmapedSize, "ReadProcMaps()");
   Size = MmapedSize;
   Err = internal_sysctl(Mib, ARRAY_SIZE(Mib), VmMap, &Size, NULL, 0);
   CHECK_EQ(Err, 0);
   proc_maps->data = (char *)VmMap;
-#else
-  size_t PageSize = GetPageSize();
-  size_t MmapedSize = Size;
-  MmapedSize = ((MmapedSize - 1) / PageSize + 1) * PageSize;
-  char *Mem = (char *)MmapOrDie(MmapedSize, "ReadProcMaps()");
-  Size = 2 * Size + 10 * sizeof(struct kinfo_vmentry);
-  if (Size > 0x10000)
-    Size = 0x10000;
-  Size = (Size / sizeof(struct kinfo_vmentry)) * sizeof(struct kinfo_vmentry);
-  Err = internal_sysctl(Mib, ARRAY_SIZE(Mib), Mem, &Size, NULL, 0);
-  CHECK_EQ(Err, 0);
-  MmapedSize = Size;
-  proc_maps->data = Mem;
-#endif
-
   proc_maps->mmaped_size = MmapedSize;
   proc_maps->len = Size;
 }
@@ -117,13 +92,11 @@ bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
   if ((VmEntry->kve_protection & KVME_PROT_EXEC) != 0)
     segment->protection |= kProtectionExecute;
 
-#if !SANITIZER_OPENBSD
   if (segment->filename != NULL && segment->filename_size > 0) {
     internal_snprintf(segment->filename,
                       Min(segment->filename_size, (uptr)PATH_MAX), "%s",
                       VmEntry->kve_path);
   }
-#endif
 
 #if SANITIZER_FREEBSD
   data_.current += VmEntry->kve_structsize;

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_common.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_common.cpp
index e0cb47f8ca9a..f2cfcffaf476 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_common.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_procmaps_common.cpp
@@ -12,7 +12,7 @@
 #include "sanitizer_platform.h"
 
 #if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD ||                \
-    SANITIZER_OPENBSD || SANITIZER_SOLARIS
+    SANITIZER_SOLARIS
 
 #include "sanitizer_common.h"
 #include "sanitizer_placement_new.h"

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h b/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
index d9fd88d90a74..0350fe84b045 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace.h
@@ -25,8 +25,6 @@ static const u32 kStackTraceMax = 256;
 # define SANITIZER_CAN_FAST_UNWIND 0
 #elif SANITIZER_WINDOWS
 # define SANITIZER_CAN_FAST_UNWIND 0
-#elif SANITIZER_OPENBSD
-# define SANITIZER_CAN_FAST_UNWIND 0
 #else
 # define SANITIZER_CAN_FAST_UNWIND 1
 #endif
@@ -34,7 +32,7 @@ static const u32 kStackTraceMax = 256;
 // Fast unwind is the only option on Mac for now; we will need to
 // revisit this macro when slow unwind works on Mac, see
 // https://github.com/google/sanitizers/issues/137
-#if SANITIZER_MAC || SANITIZER_OPENBSD || SANITIZER_RTEMS
+#if SANITIZER_MAC || SANITIZER_RTEMS
 # define SANITIZER_CAN_SLOW_UNWIND 0
 #else
 # define SANITIZER_CAN_SLOW_UNWIND 1

diff  --git a/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc b/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc
index a43ce3efab12..8829985b5b07 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_syscall_generic.inc
@@ -13,7 +13,7 @@
 // NetBSD uses libc calls directly
 #if !SANITIZER_NETBSD
 
-#if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_OPENBSD || SANITIZER_SOLARIS
+#if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_SOLARIS
 # define SYSCALL(name) SYS_ ## name
 #else
 # define SYSCALL(name) __NR_ ## name

diff  --git a/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cpp b/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cpp
index 212d2f56ff86..259bd99324a2 100644
--- a/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cpp
+++ b/compiler-rt/lib/sanitizer_common/tests/sanitizer_common_test.cpp
@@ -354,7 +354,7 @@ TEST(SanitizerCommon, InternalScopedString) {
 }
 
 #if SANITIZER_LINUX || SANITIZER_FREEBSD || \
-  SANITIZER_OPENBSD || SANITIZER_MAC || SANITIZER_IOS
+  SANITIZER_MAC || SANITIZER_IOS
 TEST(SanitizerCommon, GetRandom) {
   u8 buffer_1[32], buffer_2[32];
   for (bool blocking : { false, true }) {

diff  --git a/compiler-rt/lib/tsan/go/buildgo.sh b/compiler-rt/lib/tsan/go/buildgo.sh
index e9b4b4c9f9c0..4cfbeff8b4ca 100755
--- a/compiler-rt/lib/tsan/go/buildgo.sh
+++ b/compiler-rt/lib/tsan/go/buildgo.sh
@@ -108,27 +108,6 @@ elif [ "`uname -a | grep NetBSD`" != "" ]; then
 		../../sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
 		../../sanitizer_common/sanitizer_stoptheworld_netbsd_libcdep.cpp
 	"
-elif [ "`uname -a | grep OpenBSD`" != "" ]; then
-	# The resulting object still depends on libc.
-	# We removed this dependency for Go runtime for other OSes,
-	# and we should remove it for OpenBSD as well, but there is no pressing need.
-	DEPENDS_ON_LIBC=1
-	SUFFIX="openbsd_amd64"
-	OSCFLAGS="-fno-strict-aliasing -fPIC -Werror"
-	ARCHCFLAGS="-m64"
-	OSLDFLAGS="-pthread -fPIC -fpie"
-	SRCS="
-		$SRCS
-		../rtl/tsan_platform_linux.cpp
-		../../sanitizer_common/sanitizer_posix.cpp
-		../../sanitizer_common/sanitizer_posix_libcdep.cpp
-		../../sanitizer_common/sanitizer_procmaps_bsd.cpp
-		../../sanitizer_common/sanitizer_procmaps_common.cpp
-		../../sanitizer_common/sanitizer_linux.cpp
-		../../sanitizer_common/sanitizer_linux_libcdep.cpp
-		../../sanitizer_common/sanitizer_openbsd.cpp
-		../../sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
-	"
 elif [ "`uname -a | grep Darwin`" != "" ]; then
 	SUFFIX="darwin_amd64"
 	OSCFLAGS="-fPIC -Wno-unused-const-variable -Wno-unknown-warning-option -mmacosx-version-min=10.7"

diff  --git a/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp b/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp
index 710e7ec97b70..d136dcb1cec3 100644
--- a/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp
+++ b/compiler-rt/lib/tsan/rtl/tsan_platform_linux.cpp
@@ -12,14 +12,12 @@
 //===----------------------------------------------------------------------===//
 
 #include "sanitizer_common/sanitizer_platform.h"
-#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD || \
-    SANITIZER_OPENBSD
+#if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD
 
 #include "sanitizer_common/sanitizer_common.h"
 #include "sanitizer_common/sanitizer_libc.h"
 #include "sanitizer_common/sanitizer_linux.h"
 #include "sanitizer_common/sanitizer_platform_limits_netbsd.h"
-#include "sanitizer_common/sanitizer_platform_limits_openbsd.h"
 #include "sanitizer_common/sanitizer_platform_limits_posix.h"
 #include "sanitizer_common/sanitizer_posix.h"
 #include "sanitizer_common/sanitizer_procmaps.h"
@@ -517,5 +515,4 @@ void cur_thread_finalize() {
 
 }  // namespace __tsan
 
-#endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD ||
-        // SANITIZER_OPENBSD
+#endif  // SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_NETBSD

diff  --git a/compiler-rt/lib/ubsan/ubsan_platform.h b/compiler-rt/lib/ubsan/ubsan_platform.h
index 71d7fb18c9b3..32d949d75b9c 100644
--- a/compiler-rt/lib/ubsan/ubsan_platform.h
+++ b/compiler-rt/lib/ubsan/ubsan_platform.h
@@ -14,7 +14,7 @@
 
 // Other platforms should be easy to add, and probably work as-is.
 #if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) ||        \
-    defined(__NetBSD__) || defined(__OpenBSD__) || \
+    defined(__NetBSD__) || \
     (defined(__sun__) && defined(__svr4__)) || \
     defined(_WIN32) || defined(__Fuchsia__) || defined(__rtems__)
 # define CAN_SANITIZE_UB 1

diff  --git a/compiler-rt/lib/xray/xray_basic_logging.cpp b/compiler-rt/lib/xray/xray_basic_logging.cpp
index 6e8e93131451..a58ae9b5e267 100644
--- a/compiler-rt/lib/xray/xray_basic_logging.cpp
+++ b/compiler-rt/lib/xray/xray_basic_logging.cpp
@@ -18,7 +18,7 @@
 #include <fcntl.h>
 #include <pthread.h>
 #include <sys/stat.h>
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD || SANITIZER_MAC
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_MAC
 #include <sys/syscall.h>
 #endif
 #include <sys/types.h>

diff  --git a/compiler-rt/lib/xray/xray_x86_64.cpp b/compiler-rt/lib/xray/xray_x86_64.cpp
index f3742ac71290..c58584b3a14b 100644
--- a/compiler-rt/lib/xray/xray_x86_64.cpp
+++ b/compiler-rt/lib/xray/xray_x86_64.cpp
@@ -6,12 +6,8 @@
 #include "xray_defs.h"
 #include "xray_interface_internal.h"
 
-#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD || SANITIZER_MAC
+#if SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_MAC
 #include <sys/types.h>
-#if SANITIZER_OPENBSD
-#include <sys/time.h>
-#include <machine/cpu.h>
-#endif
 #include <sys/sysctl.h>
 #elif SANITIZER_FUCHSIA
 #include <zircon/syscalls.h>
@@ -86,14 +82,11 @@ uint64_t getTSCFrequency() XRAY_NEVER_INSTRUMENT {
   }
   return TSCFrequency == -1 ? 0 : static_cast<uint64_t>(TSCFrequency);
 }
-#elif SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_OPENBSD || SANITIZER_MAC
+#elif SANITIZER_FREEBSD || SANITIZER_NETBSD || SANITIZER_MAC
 uint64_t getTSCFrequency() XRAY_NEVER_INSTRUMENT {
     long long TSCFrequency = -1;
     size_t tscfreqsz = sizeof(TSCFrequency);
-#if SANITIZER_OPENBSD
-    int Mib[2] = { CTL_MACHDEP, CPU_TSCFREQ };
-    if (internal_sysctl(Mib, 2, &TSCFrequency, &tscfreqsz, NULL, 0) != -1) {
-#elif SANITIZER_MAC
+#if SANITIZER_MAC
     if (internal_sysctlbyname("machdep.tsc.frequency", &TSCFrequency,
                               &tscfreqsz, NULL, 0) != -1) {
 


        


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