Add `#ifdef __cplusplus` around `extern "C"` in Compiler.h. NFC.

llvm-svn: 278119

diff --git a/llvm/include/llvm/Support/Compiler.h b/llvm/include/llvm/Support/Compiler.h
index fae0d8f..3489937 100644 (file)
--- a/llvm/include/llvm/Support/Compiler.h
+++ b/llvm/include/llvm/Support/Compiler.h
@@ -405,12 +405,16 @@
 // Thread Sanitizer is a tool that finds races in code.
 // See http://code.google.com/p/data-race-test/wiki/DynamicAnnotations .
 // tsan detects these exact functions by name.
+#ifdef __cplusplus
 extern "C" {
+#endif
 void AnnotateHappensAfter(const char *file, int line, const volatile void *cv);
 void AnnotateHappensBefore(const char *file, int line, const volatile void *cv);
 void AnnotateIgnoreWritesBegin(const char *file, int line);
 void AnnotateIgnoreWritesEnd(const char *file, int line);
+#ifdef __cplusplus
 }
+#endif
 
 // This marker is used to define a happens-before arc. The race detector will
 // infer an arc from the begin to the end when they share the same pointer