forked from OSchip/llvm-project
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
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// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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// UNSUPPORTED: tvos, watchos
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// XFAIL: ios && !iossim
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#include "sanitizer_common/sanitizer_ucontext.h"
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#include "test.h"
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char stack[64 * 1024] __attribute__((aligned(16)));
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ucontext_t uc, orig_uc1, orig_uc2;
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void *fiber, *orig_fiber1, *orig_fiber2;
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int var;
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void *Thread(void *x) {
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orig_fiber2 = __tsan_get_current_fiber();
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swapcontext(&orig_uc2, &orig_uc1);
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return 0;
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}
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void func() {
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pthread_t t;
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pthread_create(&t, 0, Thread, 0);
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pthread_join(t, 0);
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__tsan_switch_to_fiber(orig_fiber1, 0);
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swapcontext(&uc, &orig_uc1);
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}
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int main() {
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orig_fiber1 = __tsan_get_current_fiber();
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fiber = __tsan_create_fiber(0);
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getcontext(&uc);
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uc.uc_stack.ss_sp = stack;
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uc.uc_stack.ss_size = sizeof(stack);
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uc.uc_link = 0;
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makecontext(&uc, func, 0);
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var = 1;
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__tsan_switch_to_fiber(fiber, 0);
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swapcontext(&orig_uc1, &uc);
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var = 2;
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__tsan_switch_to_fiber(orig_fiber2, 0);
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swapcontext(&orig_uc1, &orig_uc2);
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var = 3;
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__tsan_destroy_fiber(fiber);
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fprintf(stderr, "PASS\n");
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return 0;
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}
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// CHECK-NOT: WARNING: ThreadSanitizer:
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// CHECK: PASS
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