[clang] [UBSan][NFC] Move =sanitize handling. (PR #142006)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Qinkun Bao (qinkunbao)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/142006.diff


2 Files Affected:

- (modified) clang/lib/AST/ASTContext.cpp (+1-2) 
- (modified) clang/lib/Basic/NoSanitizeList.cpp (+5-1) 


``````````diff
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index e71928ec0dc1c..5044d7c33ec3c 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -875,8 +875,7 @@ ASTContext::insertCanonicalTemplateTemplateParmDeclInternal(
 bool ASTContext::isTypeIgnoredBySanitizer(const SanitizerMask &Mask,
                                           const QualType &Ty) const {
   std::string TyName = Ty.getUnqualifiedType().getAsString(getPrintingPolicy());
-  return NoSanitizeL->containsType(Mask, TyName) &&
-         !NoSanitizeL->containsType(Mask, TyName, "sanitize");
+  return NoSanitizeL->containsType(Mask, TyName);
 }
 
 TargetCXXABI::Kind ASTContext::getCXXABIKind() const {
diff --git a/clang/lib/Basic/NoSanitizeList.cpp b/clang/lib/Basic/NoSanitizeList.cpp
index a3ca463fc8efb..61ee19555c0ca 100644
--- a/clang/lib/Basic/NoSanitizeList.cpp
+++ b/clang/lib/Basic/NoSanitizeList.cpp
@@ -34,7 +34,11 @@ bool NoSanitizeList::containsGlobal(SanitizerMask Mask, StringRef GlobalName,
 
 bool NoSanitizeList::containsType(SanitizerMask Mask, StringRef MangledTypeName,
                                   StringRef Category) const {
-  return SSCL->inSection(Mask, "type", MangledTypeName, Category);
+  auto NoSan = SSCL->inSectionBlame(Mask, "type", FileName, Category);
+  if (NoSan == llvm::SpecialCaseList::NotFound)
+    return false;
+  auto San = SSCL->inSectionBlame(Mask, "type", FileName, "sanitize");
+  return San == llvm::SpecialCaseList::NotFound || NoSan > San;
 }
 
 bool NoSanitizeList::containsFunction(SanitizerMask Mask,

``````````

</details>


https://github.com/llvm/llvm-project/pull/142006