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53 lines
1.4 KiB
53 lines
1.4 KiB
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
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#include "../test.h"
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#include <memory.h>
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// A reproducer for a known issue.
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// See reference to double_race.cpp in tsan_rtl_report.cpp for an explanation.
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char buf[16];
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volatile int nreport;
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void __sanitizer_report_error_summary(const char *summary) {
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nreport++;
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}
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const int kEventPCBits = 61;
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extern "C" bool __tsan_symbolize_external(unsigned long pc, char *func_buf,
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unsigned long func_siz,
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char *file_buf,
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unsigned long file_siz, int *line,
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int *col) {
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if (pc >> kEventPCBits) {
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printf("bad PC passed to __tsan_symbolize_external: %lx\n", pc);
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_exit(1);
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}
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return true;
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}
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void *Thread(void *arg) {
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barrier_wait(&barrier);
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memset(buf, 2, sizeof(buf));
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return 0;
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}
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int main() {
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barrier_init(&barrier, 2);
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pthread_t t;
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pthread_create(&t, 0, Thread, 0);
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memset(buf, 1, sizeof(buf));
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barrier_wait(&barrier);
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pthread_join(t, 0);
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return 0;
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 8 at {{.*}} by thread T1:
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// CHECK: #0 memset
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// CHECK: #{{[12]}} Thread
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// CHECK-NOT: bad PC passed to __tsan_symbolize_external
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 8 at {{.*}} by thread T1:
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// CHECK: #0 Thread
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