| Vedant Kumar | 6b22dda | 2017-04-26 21:55:17 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -x c++ -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=nullability-assign | FileCheck %s |
| 2 | |
| 3 | struct S1 { |
| 4 | int *_Nonnull p; |
| 5 | }; |
| 6 | |
| 7 | struct S2 { |
| 8 | S1 s1; |
| 9 | }; |
| 10 | |
| 11 | union U1 { |
| 12 | S1 s1; |
| 13 | S2 s2; |
| 14 | }; |
| 15 | |
| 16 | // CHECK-LABEL: define void @{{.*}}f1 |
| 17 | void f1(int *p) { |
| 18 | U1 u; |
| 19 | |
| 20 | // CHECK: [[ICMP:%.*]] = icmp ne i32* {{.*}}, null, !nosanitize |
| 21 | // CHECK-NEXT: br i1 [[ICMP]], {{.*}}, !nosanitize |
| 22 | // CHECK: call void @__ubsan_handle_type_mismatch{{.*}} !nosanitize |
| 23 | // CHECK: store |
| 24 | u.s1.p = p; |
| 25 | |
| 26 | // CHECK: [[ICMP:%.*]] = icmp ne i32* {{.*}}, null, !nosanitize |
| 27 | // CHECK-NEXT: br i1 [[ICMP]], {{.*}}, !nosanitize |
| 28 | // CHECK: call void @__ubsan_handle_type_mismatch{{.*}} !nosanitize |
| 29 | // CHECK: store |
| 30 | u.s2.s1.p = p; |
| 31 | |
| 32 | // CHECK-NOT: __ubsan_handle_type_mismatch |
| 33 | // CHECK-NOT: store |
| 34 | // CHECK: ret void |
| 35 | } |