| // 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); |
| } |
