[clang-tools-extra] [clang-tidy] Add `-std` argument in `check_clang_tidy.py` for C files (PR #150791)

[Baranov Victor via cfe-commits]

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@@ -19,13 +18,16 @@ void notRelated(int A, int B) {}
 
 int addedTogether(int A, int B) { return add(A, B); } // NO-WARN: Passed to same function.
 
+// FIXME: This triggers a false positive: the "passed to same function" heuristic
+// can't map the parameter index 1 to A and B because myprint() has no
+// parameters.
+//     warning: 2 adjacent parameters of 'passedToSameKNRFunction' of similar type ('int')
+//     note: the first parameter in the range is 'A'
+//     note: the last parameter in the range is 'B'
+#if 0
+int myprint();
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vbvictor wrote:

We should preserve false-positives in code, because someone could make a refactor/speedup patch of the check and accidentally fix FP. Without this test, developer wouldn't know he fixed a FP with an NFC patch.

https://github.com/llvm/llvm-project/pull/150791