Index: lib/CodeGen/CGClass.cpp =================================================================== --- lib/CodeGen/CGClass.cpp +++ lib/CodeGen/CGClass.cpp @@ -1479,7 +1479,8 @@ ExitCXXTryStmt(*cast(Body), true); // Insert memory-poisoning instrumentation. - if (CGM.getCodeGenOpts().SanitizeMemoryUseAfterDtor) + if (CGM.getCodeGenOpts().SanitizeMemoryUseAfterDtor + && SanOpts.has(SanitizerKind::Memory)) EmitDtorSanitizerCallback(*this, Dtor); } Index: test/CodeGenCXX/sanitize-dtor-callback.cpp =================================================================== --- test/CodeGenCXX/sanitize-dtor-callback.cpp +++ test/CodeGenCXX/sanitize-dtor-callback.cpp @@ -67,3 +67,6 @@ // CHECK: call void @__sanitizer_dtor_callback // CHECK-NOT: call void @__sanitizer_dtor_callback // CHECK: ret void + +// When attribute is repressed, the destructor does not emit any tail calls +// CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory Index: test/CodeGenCXX/sanitize-dtor-fn-attribute.cpp =================================================================== --- /dev/null +++ test/CodeGenCXX/sanitize-dtor-fn-attribute.cpp @@ -0,0 +1,19 @@ +// Test -fsanitize-memory-use-after-dtor +// RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s + +struct No_San { + int x; + No_San() { + x = 5; + } + __attribute__((no_sanitize_memory)) ~No_San() {} +}; +No_San ns; +// Repressing the sanitization attribute results in no msan +// instrumentation of the destructor +// CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] +// CHECK-NOT: call void @__sanitizer_dtor_callback +// CHECK: ret void + +// When attribute is repressed, the destructor does not emit any tail calls +// CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory