[libcxx-commits] [PATCH] D149635: [libunwind] Use __builtin_alloca to avoid missing include

[Louis Dionne via Phabricator via libcxx-commits]

ldionne updated this revision to Diff 556486.
ldionne retitled this revision from "[libunwind] include alloca.h in config.h" to "[libunwind] Use __builtin_alloca to avoid missing include".
ldionne added a comment.

Use __builtin_alloca


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D149635/new/

https://reviews.llvm.org/D149635

Files:
  libunwind/src/config.h


Index: libunwind/src/config.h
===================================================================
--- libunwind/src/config.h
+++ libunwind/src/config.h
@@ -127,7 +127,7 @@
 #if defined(_LIBUNWIND_REMEMBER_STACK_ALLOC) || defined(__APPLE__) ||          \
     defined(__linux__) || defined(__ANDROID__) || defined(__MINGW32__) ||      \
     defined(_LIBUNWIND_IS_BAREMETAL)
-#define _LIBUNWIND_REMEMBER_ALLOC(_size) alloca(_size)
+#define _LIBUNWIND_REMEMBER_ALLOC(_size) __builtin_alloca(_size)
 #define _LIBUNWIND_REMEMBER_FREE(_ptr)                                         \
   do {                                                                         \
   } while (0)


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