diff options
Diffstat (limited to 'test/CodeGenObjC/ubsan-nonnull-and-nullability.m')
-rw-r--r-- | test/CodeGenObjC/ubsan-nonnull-and-nullability.m | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/test/CodeGenObjC/ubsan-nonnull-and-nullability.m b/test/CodeGenObjC/ubsan-nonnull-and-nullability.m new file mode 100644 index 000000000000..b927f55cd402 --- /dev/null +++ b/test/CodeGenObjC/ubsan-nonnull-and-nullability.m @@ -0,0 +1,31 @@ +// REQUIRES: asserts +// RUN: %clang_cc1 -x objective-c -emit-llvm -triple x86_64-apple-macosx10.10.0 -fsanitize=nullability-return,returns-nonnull-attribute,nullability-arg,nonnull-attribute %s -o - -w | FileCheck %s + +// If both the annotation and the attribute are present, prefer the attribute, +// since it actually affects IRGen. + +// CHECK-LABEL: define nonnull i32* @f1 +__attribute__((returns_nonnull)) int *_Nonnull f1(int *_Nonnull p) { + // CHECK: entry: + // CHECK-NEXT: [[ADDR:%.*]] = alloca i32* + // CHECK-NEXT: store i32* [[P:%.*]], i32** [[ADDR]] + // CHECK-NEXT: [[ARG:%.*]] = load i32*, i32** [[ADDR]] + // CHECK-NEXT: [[ICMP:%.*]] = icmp ne i32* [[ARG]], null, !nosanitize + // CHECK-NEXT: br i1 [[ICMP]], label %[[CONT:.+]], label %[[HANDLE:[^,]+]] + // CHECK: [[HANDLE]]: + // CHECK-NEXT: call void @__ubsan_handle_nonnull_return_abort + // CHECK-NEXT: unreachable, !nosanitize + // CHECK: [[CONT]]: + // CHECK-NEXT: ret i32* + return p; +} + +// CHECK-LABEL: define void @f2 +void f2(int *_Nonnull __attribute__((nonnull)) p) {} + +// CHECK-LABEL: define void @call_f2 +void call_f2() { + // CHECK: call void @__ubsan_handle_nonnull_arg_abort + // CHECK-NOT: call void @__ubsan_handle_nonnull_arg_abort + f2((void *)0); +} |