compiler-rt/test/tsan/race_range_pc.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 // This test fails on powerpc64 big endian.
   3 // The Tsan report is returning wrong information about
   4 // the location of the race.
   5 // XFAIL: target=powerpc64-unknown-linux-gnu{{.*}}
   6
   7 #include "test.h"
   8
   9 typedef unsigned long uptr;
  10 extern "C" void __tsan_read_range_pc(uptr addr, uptr size, uptr pc);
  11 extern "C" void __tsan_write_range_pc(uptr addr, uptr size, uptr pc);
  12
  13 void foobar() {
  14 }
  15
  16 void barbaz() {
  17 }
  18
  19 void *Thread(void *p) {
  20   barrier_wait(&barrier);
  21   __tsan_read_range_pc((uptr)p, 32, (uptr)foobar + kPCInc);
  22   return 0;
  23 }
  24
  25 int main() {
  26   barrier_init(&barrier, 2);
  27   int a[128];
  28   pthread_t th;
  29   pthread_create(&th, 0, Thread, (void*)a);
  30   __tsan_write_range_pc((uptr)(a+2), 32, (uptr)barbaz + kPCInc);
  31   barrier_wait(&barrier);
  32   pthread_join(th, 0);
  33   fprintf(stderr, "DONE\n");
  34   return 0;
  35 }
  36
  37 // CHECK: WARNING: ThreadSanitizer: data race
  38 // CHECK:     #0 foobar
  39 // CHECK:     #0 barbaz
  40 // CHECK: DONE