| 1 | // RUN: %clangxx_tysan -O0 %s -c -o %t.o |
| 2 | // RUN: %clangxx_tysan -O0 %s -DPMAIN -c -o %tm.o |
| 3 | // RUN: %clangxx_tysan -O0 %s -DPINIT -c -o %tinit.o |
| 4 | // RUN: %clangxx_tysan -O0 %t.o %tm.o %tinit.o -o %t |
| 5 | // RUN: %run %t 2>&1 | FileCheck %s |
| 6 | |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | |
| 10 | extern "C" { |
| 11 | typedef struct X { |
| 12 | int *start; |
| 13 | int *end; |
| 14 | int i; |
| 15 | } X; |
| 16 | }; |
| 17 | |
| 18 | #ifdef PMAIN |
| 19 | int foo(struct X *); |
| 20 | void bar(struct X *); |
| 21 | void init(struct X *); |
| 22 | |
| 23 | int main() { |
| 24 | struct X x; |
| 25 | init(&x); |
| 26 | printf("%d\n" , foo(&x)); |
| 27 | free(x.start); |
| 28 | return 0; |
| 29 | } |
| 30 | |
| 31 | #elif PINIT |
| 32 | |
| 33 | void init(struct X *x) { |
| 34 | x->start = (int *)calloc(100, sizeof(int)); |
| 35 | x->end = x->start + 99; |
| 36 | x->i = 0; |
| 37 | } |
| 38 | |
| 39 | #else |
| 40 | |
| 41 | __attribute__((noinline)) int foo(struct X *x) { |
| 42 | if (x->start < x->end) |
| 43 | return 30; |
| 44 | return 10; |
| 45 | } |
| 46 | |
| 47 | void bar(struct X *x) { x->end = NULL; } |
| 48 | |
| 49 | #endif |
| 50 | |
| 51 | // CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation |
| 52 | |