[PATCH] D28151: Ensure that only one compiler-rt component is created for lsan
Francis Ricci via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sun Jan 1 18:22:28 PST 2017
fjricci updated this revision to Diff 82793.
fjricci updated the summary for this revision.
fjricci added a comment.
Update to use individual symbols names
https://reviews.llvm.org/D28151
Files:
cmake/config-ix.cmake
lib/lsan/CMakeLists.txt
lib/lsan/lsan_allocator.cc
lib/lsan/lsan_common.cc
Index: lib/lsan/lsan_common.cc
===================================================================
--- lib/lsan/lsan_common.cc
+++ lib/lsan/lsan_common.cc
@@ -758,5 +758,10 @@
int __lsan_is_turned_off() {
return 0;
}
+
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char *__lsan_default_suppressions() {
+ return "";
+}
#endif
} // extern "C"
Index: lib/lsan/lsan_allocator.cc
===================================================================
--- lib/lsan/lsan_allocator.cc
+++ lib/lsan/lsan_allocator.cc
@@ -258,4 +258,17 @@
uptr __sanitizer_get_allocated_size(const void *p) {
return GetMallocUsableSize(p);
}
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+// Provide default (no-op) implementation of malloc hooks.
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_malloc_hook(void *ptr, uptr size) {
+ (void)ptr;
+ (void)size;
+}
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+void __sanitizer_free_hook(void *ptr) {
+ (void)ptr;
+}
+#endif
} // extern "C"
Index: lib/lsan/CMakeLists.txt
===================================================================
--- lib/lsan/CMakeLists.txt
+++ lib/lsan/CMakeLists.txt
@@ -23,9 +23,8 @@
CFLAGS ${LSAN_CFLAGS})
if(COMPILER_RT_HAS_LSAN)
+ add_compiler_rt_component(lsan)
foreach(arch ${LSAN_SUPPORTED_ARCH})
- add_compiler_rt_component(lsan)
-
add_compiler_rt_runtime(clang_rt.lsan
STATIC
ARCHS ${arch}
Index: cmake/config-ix.cmake
===================================================================
--- cmake/config-ix.cmake
+++ cmake/config-ix.cmake
@@ -245,6 +245,24 @@
-stdlib=libc++
-lc++
-lc++abi)
+
+ set(DARWIN_WEAK_SYMBOLS
+ ___asan_default_options
+ ___asan_default_suppressions
+ ___asan_on_error
+ ___lsan_default_suppressions
+ ___lsan_is_turned_off
+ ___sanitizer_free_hook
+ ___sanitizer_malloc_hook
+ ___sanitizer_symbolize_code
+ ___sanitizer_symbolize_data
+ ___sanitizer_symbolize_demangle
+ ___sanitizer_symbolize_flush
+ ___ubsan_default_options)
+
+ foreach(SYMBOL ${DARWIN_WEAK_SYMBOLS})
+ set(DARWIN_COMMON_LINKFLAGS ${DARWIN_COMMON_LINKFLAGS} -Wl,-U,${SYMBOL})
+ endforeach()
check_linker_flag("-fapplication-extension" COMPILER_RT_HAS_APP_EXTENSION)
if(COMPILER_RT_HAS_APP_EXTENSION)
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