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// RUN: %clang_tsan -O1 %s -o %t && %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_uc1, orig_uc2;
void *fiber, *orig_fiber1, *orig_fiber2;
int var;
void *Thread(void *x) {
orig_fiber2 = __tsan_get_current_fiber();
swapcontext(&orig_uc2, &orig_uc1);
return 0;
}
void func() {
pthread_t t;
pthread_create(&t, 0, Thread, 0);
pthread_join(t, 0);
__tsan_switch_to_fiber(orig_fiber1, 0);
swapcontext(&uc, &orig_uc1);
}
int main() {
orig_fiber1 = __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 = 1;
__tsan_switch_to_fiber(fiber, 0);
swapcontext(&orig_uc1, &uc);
var = 2;
__tsan_switch_to_fiber(orig_fiber2, 0);
swapcontext(&orig_uc1, &orig_uc2);
var = 3;
__tsan_destroy_fiber(fiber);
fprintf(stderr, "PASS\n");
return 0;
}
// CHECK-NOT: WARNING: ThreadSanitizer:
// CHECK: PASS
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