| 1 | // RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1 |
| 2 | // RUN: FileCheck %s < %t.out |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | |
| 6 | long foo(int *x, long *y) { |
| 7 | *x = 0; |
| 8 | *y = 1; |
| 9 | // CHECK: ERROR: TypeSanitizer: type-aliasing-violation |
| 10 | // CHECK: WRITE of size 8 at {{.*}} with type long accesses an existing object of type int |
| 11 | // CHECK: {{#0 0x.* in foo .*int-long.c:}}[[@LINE-3]] |
| 12 | |
| 13 | return *x; |
| 14 | } |
| 15 | |
| 16 | int main(void) { |
| 17 | long l; |
| 18 | printf(format: "%ld\n" , foo(x: (int *)&l, y: &l)); |
| 19 | } |
| 20 | |
| 21 | // CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation |
| 22 | |