[clang] [clang] Catch missing format attributes (PR #70024)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,211 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -Wmissing-format-attribute %s
+
+#include <iostream>
+#include <cstdarg>
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AaronBallman wrote:

Same issue here with includes as in the C file.

https://github.com/llvm/llvm-project/pull/70024