| Vedant Kumar | 42c17ec | 2017-03-14 01:56:34 +0000 | [diff] [blame^] | 1 | // REQUIRES: asserts |
| 2 | // 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 |
| 3 | |
| 4 | // If both the annotation and the attribute are present, prefer the attribute, |
| 5 | // since it actually affects IRGen. |
| 6 | |
| 7 | // CHECK-LABEL: define nonnull i32* @f1 |
| 8 | __attribute__((returns_nonnull)) int *_Nonnull f1(int *_Nonnull p) { |
| 9 | // CHECK: entry: |
| 10 | // CHECK-NEXT: [[ADDR:%.*]] = alloca i32* |
| 11 | // CHECK-NEXT: store i32* [[P:%.*]], i32** [[ADDR]] |
| 12 | // CHECK-NEXT: [[ARG:%.*]] = load i32*, i32** [[ADDR]] |
| 13 | // CHECK-NEXT: [[ICMP:%.*]] = icmp ne i32* [[ARG]], null, !nosanitize |
| 14 | // CHECK-NEXT: br i1 [[ICMP]], label %[[CONT:.+]], label %[[HANDLE:[^,]+]] |
| 15 | // CHECK: [[HANDLE]]: |
| 16 | // CHECK-NEXT: call void @__ubsan_handle_nonnull_return_abort |
| 17 | // CHECK-NEXT: unreachable, !nosanitize |
| 18 | // CHECK: [[CONT]]: |
| 19 | // CHECK-NEXT: ret i32* |
| 20 | return p; |
| 21 | } |
| 22 | |
| 23 | // CHECK-LABEL: define void @f2 |
| 24 | void f2(int *_Nonnull __attribute__((nonnull)) p) {} |
| 25 | |
| 26 | // CHECK-LABEL: define void @call_f2 |
| 27 | void call_f2() { |
| 28 | // CHECK: call void @__ubsan_handle_nonnull_arg_abort |
| 29 | // CHECK-NOT: call void @__ubsan_handle_nonnull_arg_abort |
| 30 | f2((void *)0); |
| 31 | } |