[PATCH] D47079: [asan] Explicitly declare memintrinsics interceptors to have C linkage

[Walter Lee via Phabricator via llvm-commits]

waltl created this revision.
waltl added reviewers: vitalybuka, eugenis, alekseyshl.
Herald added a subscriber: kubamracek.

This is needed on RTEMS.  Also update a comment.


Repository:
  rL LLVM

https://reviews.llvm.org/D47079

Files:
  compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc


Index: compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc
===================================================================
--- compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc
+++ compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc
@@ -33,12 +33,12 @@
 
 #if SANITIZER_FUCHSIA || SANITIZER_RTEMS
 
-// Fuchsia doesn't use sanitizer_common_interceptors.inc, but the only
-// things there it wants are these three.  Just define them as aliases
-// here rather than repeating the contents.
+// Fuchsia and RTEMS don't use sanitizer_common_interceptors.inc, but
+// the only things there it wants are these three.  Just define them
+// as aliases here rather than repeating the contents.
 
-decltype(__asan_memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
-decltype(__asan_memmove) memmove[[gnu::alias("__asan_memmove")]];
-decltype(__asan_memset) memset[[gnu::alias("__asan_memset")]];
+extern "C" decltype(__asan_memcpy) memcpy[[gnu::alias("__asan_memcpy")]];
+extern "C" decltype(__asan_memmove) memmove[[gnu::alias("__asan_memmove")]];
+extern "C" decltype(__asan_memset) memset[[gnu::alias("__asan_memset")]];
 
 #endif  // SANITIZER_FUCHSIA || SANITIZER_RTEMS


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