diff options
Diffstat (limited to 'test/tsan/fiber_race.cc')
-rw-r--r-- | test/tsan/fiber_race.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/test/tsan/fiber_race.cc b/test/tsan/fiber_race.cc new file mode 100644 index 000000000..4724c72fc --- /dev/null +++ b/test/tsan/fiber_race.cc @@ -0,0 +1,36 @@ +// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s +// UNSUPPORTED: tvos, watchos +#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, __tsan_switch_to_fiber_no_sync); + 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, __tsan_switch_to_fiber_no_sync); + swapcontext(&orig_uc, &uc); + __tsan_destroy_fiber(fiber); + fprintf(stderr, "PASS\n"); + return 0; +} + +// CHECK: WARNING: ThreadSanitizer: data race +// CHECK: PASS |