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| // 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
// The no_sanitize_memory attribute, when applied to a destructor,
// represses emission of sanitizing callback
template <class T> class Vector {
public:
int size;
~Vector() {}
};
struct No_San {
Vector<int> v;
int x;
No_San() { }
__attribute__((no_sanitize_memory)) ~No_San() = default;
};
int main() {
No_San *ns = new No_San();
ns->~No_San();
return 0;
}
// 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
// CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]]
// CHECK-NOT: call void {{.*}}sanitizer_dtor_callback
// CHECK: call void {{.*}}VectorIiED2Ev
// CHECK-NOT: call void {{.*}}sanitizer_dtor_callback
// CHECK: ret void
// CHECK: define {{.*}}VectorIiED2Ev
// CHECK: 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
|