[clang] Implement src:*=sanitize for UBSan (PR #139772)

[Vitaly Buka via cfe-commits]

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@@ -44,7 +44,8 @@ bool NoSanitizeList::containsFunction(SanitizerMask Mask,
 
 bool NoSanitizeList::containsFile(SanitizerMask Mask, StringRef FileName,
                                   StringRef Category) const {
-  return SSCL->inSection(Mask, "src", FileName, Category);
+  bool allowList = SSCL->inSection(Mask, "src", FileName, "sanitize");
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vitalybuka wrote:

Probably don't do this yet.
Let's resolve for file, and then expand to the rest.

https://github.com/llvm/llvm-project/pull/139772