[PATCH] D154850: [libc] Remove GPU string functions incompatible with C++

[Joseph Huber via Phabricator via cfe-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGb454e7aa7ceb: [libc] Remove GPU string functions incompatible with C++ (authored by jhuber6).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D154850/new/

https://reviews.llvm.org/D154850

Files:
  clang/lib/Headers/llvm_libc_wrappers/string.h
  libc/config/gpu/entrypoints.txt
  libc/docs/gpu/support.rst


Index: libc/docs/gpu/support.rst
===================================================================
--- libc/docs/gpu/support.rst
+++ libc/docs/gpu/support.rst
@@ -47,7 +47,7 @@
 bcmp           |check|
 bzero          |check|
 memccpy        |check|
-memchr         |check|
+memchr         
 memcmp         |check|
 memcpy         |check|
 memmove        |check|
@@ -57,7 +57,7 @@
 stpcpy         |check|
 stpncpy        |check|
 strcat         |check|
-strchr         |check|
+strchr         
 strcmp         |check|
 strcpy         |check|
 strcspn        |check|
@@ -68,10 +68,10 @@
 strncmp        |check|
 strncpy        |check|
 strnlen        |check|
-strpbrk        |check|
-strrchr        |check|
+strpbrk        
+strrchr        
 strspn         |check|
-strstr         |check|
+strstr         
 strtok         |check|
 strtok_r       |check|
 strdup
Index: libc/config/gpu/entrypoints.txt
===================================================================
--- libc/config/gpu/entrypoints.txt
+++ libc/config/gpu/entrypoints.txt
@@ -21,7 +21,6 @@
     libc.src.string.bcmp
     libc.src.string.bzero
     libc.src.string.memccpy
-    libc.src.string.memchr
     libc.src.string.memcmp
     libc.src.string.memcpy
     libc.src.string.memmem
@@ -32,10 +31,7 @@
     libc.src.string.stpcpy
     libc.src.string.stpncpy
     libc.src.string.strcasecmp
-    libc.src.string.strcasestr
     libc.src.string.strcat
-    libc.src.string.strchr
-    libc.src.string.strchrnul
     libc.src.string.strcmp
     libc.src.string.strcpy
     libc.src.string.strcspn
@@ -47,10 +43,7 @@
     libc.src.string.strncmp
     libc.src.string.strncpy
     libc.src.string.strnlen
-    libc.src.string.strpbrk
-    libc.src.string.strrchr
     libc.src.string.strspn
-    libc.src.string.strstr
     libc.src.string.strtok
     libc.src.string.strtok_r
 
Index: clang/lib/Headers/llvm_libc_wrappers/string.h
===================================================================
--- clang/lib/Headers/llvm_libc_wrappers/string.h
+++ clang/lib/Headers/llvm_libc_wrappers/string.h
@@ -13,22 +13,11 @@
 #error "This file is for GPU offloading compilation only"
 #endif
 
-// The GNU headers provide non C-standard headers when in C++ mode. Manually
-// undefine it here so that the definitions agree with the C standard for our
-// purposes.
-#ifdef __cplusplus
-extern "C" {
-#pragma push_macro("__cplusplus")
-#undef __cplusplus
-#endif
-
+// FIXME: The GNU headers provide C++ standard compliant headers when in C++
+// mode and the LLVM libc does not. We cannot enable memchr, strchr, strchrnul,
+// strpbrk, strrchr, strstr, or strcasestr until this is addressed.
 #include_next <string.h>
 
-#pragma pop_macro("__cplusplus")
-#ifdef __cplusplus
-}
-#endif
-
 #if __has_include(<llvm-libc-decls/string.h>)
 
 #if defined(__HIP__) || defined(__CUDA__)


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