| // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
| // UNSUPPORTED: tvos, watchos |
| // XFAIL: ios && !iossim |
| #include "sanitizer_common/sanitizer_ucontext.h" |
| #include "test.h" |
| |
| char stack[64 * 1024] __attribute__((aligned(16))); |
| |
| ucontext_t uc, orig_uc; |
| void *fiber, *orig_fiber; |
| |
| int var; |
| |
| void func() { |
| var = 1; |
| __tsan_switch_to_fiber(orig_fiber, 0); |
| swapcontext(&uc, &orig_uc); |
| } |
| |
| int main() { |
| orig_fiber = __tsan_get_current_fiber(); |
| fiber = __tsan_create_fiber(0); |
| getcontext(&uc); |
| uc.uc_stack.ss_sp = stack; |
| uc.uc_stack.ss_size = sizeof(stack); |
| uc.uc_link = 0; |
| makecontext(&uc, func, 0); |
| var = 2; |
| __tsan_switch_to_fiber(fiber, 0); |
| swapcontext(&orig_uc, &uc); |
| __tsan_destroy_fiber(fiber); |
| fprintf(stderr, "PASS\n"); |
| return 0; |
| } |
| |
| // CHECK-NOT: WARNING: ThreadSanitizer: |
| // CHECK: PASS |