commit 8c48405069085a2c8b6b80816eda99e5dad31fc1
author Duncan P. N. Exon Smith <dexonsmith@apple.com> Thu Nov 14 13:57:57 2019 -0800
committer Duncan P. N. Exon Smith <dexonsmith@apple.com> Tue Nov 19 13:18:43 2019 -0800
tree af6a315cb0f8eecea89547b692c07964b0238ba1
parent 3a8104a9ea3d88fb4d0ef17185e420c814757bfd

Wrap C APIs with pragmas enforcing -Werror=strict-prototypes

Force `-Werror=strict-prototypes` so that C API tests fail to compile if
we add a non-prototype declaration.  This should help avoid regressions
like bddecba4b333f7772029b4937d2c34f9f2fda6ca was fixing.

https://reviews.llvm.org/D70285
rdar://problem/57203137

llvm/include/llvm-c/Support.h

diff --git a/llvm/include/llvm-c/Support.h b/llvm/include/llvm-c/Support.h
index 097f784..866df32 100644
--- a/llvm/include/llvm-c/Support.h
+++ b/llvm/include/llvm-c/Support.h
@@ -15,11 +15,10 @@
 #define LLVM_C_SUPPORT_H
 
 #include "llvm-c/DataTypes.h"
+#include "llvm-c/ExternC.h"
 #include "llvm-c/Types.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_C_EXTERN_C_BEGIN
 
 /**
  * This function permanently loads the dynamic library at the given path.
@@ -58,8 +57,6 @@
  */
 void LLVMAddSymbol(const char *symbolName, void *symbolValue);
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_C_EXTERN_C_END
 
 #endif