Dtor callback emitted when msan attribute not repressed for this function.

Summary: In addition to checking compiler flags, the front-end also examines the attributes of the destructor definition to ensure that the SanitizeMemory attribute is attached.

Reviewers: eugenis, kcc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D11727

refactored test into new file, revised how function attribute examined

modified test to examine default dtor with and without attribute

removed attribute check

llvm-svn: 243912

clang/lib/CodeGen/CGClass.cpp

@@ -1479,7 +1479,8 @@ void CodeGenFunction::EmitDestructorBody(FunctionArgList &Args) {
     ExitCXXTryStmt(*cast<CXXTryStmt>(Body), true);
 
   // Insert memory-poisoning instrumentation.
-  if (CGM.getCodeGenOpts().SanitizeMemoryUseAfterDtor)
+  if (CGM.getCodeGenOpts().SanitizeMemoryUseAfterDtor
+      && SanOpts.has(SanitizerKind::Memory))
     EmitDtorSanitizerCallback(*this, Dtor);
 }