[clang] [-Wunsafe-buffer-usage] Fix a bug and suppress libc warnings for C files (PR #109496)

[via cfe-commits]

================
@@ -250,7 +250,9 @@ AST_MATCHER_P(Stmt, ignoreUnsafeBufferInContainer,
 
 AST_MATCHER_P(Stmt, ignoreUnsafeLibcCall, const UnsafeBufferUsageHandler *,
               Handler) {
-  return Handler->ignoreUnsafeBufferInLibcCall(Node.getBeginLoc());
+  if (Finder->getASTContext().getLangOpts().CPlusPlus)
+    return Handler->ignoreUnsafeBufferInLibcCall(Node.getBeginLoc());
+  return true; /* Only warn about libc calls for C++ */
----------------
jkorous-apple wrote:

This implementation should warn in Obj-C++ too and it should not in Obj-C but you might want to test that.

https://github.com/llvm/llvm-project/pull/109496