69cd776e1e
arguments. * Adds 'nonnull' and 'dereferenceable(N)' to 'this' pointer arguments * Gates 'nonnull' on -f(no-)delete-null-pointer-checks * Introduces this-nonnull.cpp and microsoft-abi-this-nullable.cpp tests to explicitly test the behavior of this change * Refactors hundreds of over-constrained clang tests to permit these attributes, where needed * Updates Clang12 patch notes mentioning this change Reviewed-by: rsmith, jdoerfert Differential Revision: https://reviews.llvm.org/D17993
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
// RUN: %clang_cc1 -flto -triple x86_64-unknown-linux -fsanitize=cfi-vcall -fsanitize-cfi-cross-dso -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=ITANIUM %s
|
|
// RUN: %clang_cc1 -flto -triple x86_64-pc-windows-msvc -fsanitize=cfi-vcall -fsanitize-cfi-cross-dso -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=MS %s
|
|
|
|
struct A {
|
|
A();
|
|
virtual void f();
|
|
};
|
|
|
|
A::A() {}
|
|
void A::f() {}
|
|
|
|
void caller(A* a) {
|
|
a->f();
|
|
}
|
|
|
|
namespace {
|
|
struct B {
|
|
virtual void f();
|
|
};
|
|
|
|
void B::f() {}
|
|
} // namespace
|
|
|
|
void g() {
|
|
B b;
|
|
b.f();
|
|
}
|
|
|
|
// MS: @[[B_VTABLE:.*]] = private unnamed_addr constant { [2 x i8*] } {{.*}}@"??_R4B@?A0x{{[^@]*}}@@6B@"{{.*}}@"?f@B@?A0x{{[^@]*}}@@UEAAXXZ"
|
|
|
|
// CHECK: %[[VT:.*]] = load void (%struct.A*)**, void (%struct.A*)***
|
|
// CHECK: %[[VT2:.*]] = bitcast {{.*}}%[[VT]] to i8*, !nosanitize
|
|
// ITANIUM: %[[TEST:.*]] = call i1 @llvm.type.test(i8* %[[VT2]], metadata !"_ZTS1A"), !nosanitize
|
|
// MS: %[[TEST:.*]] = call i1 @llvm.type.test(i8* %[[VT2]], metadata !"?AUA@@"), !nosanitize
|
|
// CHECK: br i1 %[[TEST]], label %[[CONT:.*]], label %[[SLOW:.*]], {{.*}} !nosanitize
|
|
// CHECK: [[SLOW]]
|
|
// ITANIUM: call void @__cfi_slowpath_diag(i64 7004155349499253778, i8* %[[VT2]], {{.*}}) {{.*}} !nosanitize
|
|
// MS: call void @__cfi_slowpath_diag(i64 -8005289897957287421, i8* %[[VT2]], {{.*}}) {{.*}} !nosanitize
|
|
// CHECK: br label %[[CONT]], !nosanitize
|
|
// CHECK: [[CONT]]
|
|
// CHECK: call void %{{.*}}(%struct.A* {{[^,]*}} %{{.*}})
|
|
|
|
// No hash-based bit set entry for (anonymous namespace)::B
|
|
// ITANIUM-NOT: !{i64 {{.*}}, [3 x i8*]* @_ZTVN12_GLOBAL__N_11BE,
|
|
// MS-NOT: !{i64 {{.*}}, [2 x i8*]* @[[B_VTABLE]],
|