compiler-rt/test/tsan/java_race_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 #include "java.h"
   7
   8 void foobar() {
   9 }
  10
  11 void barbaz() {
  12 }
  13
  14 void *Thread(void *p) {
  15   barrier_wait(&barrier);
  16   __tsan_read1_pc((jptr)p, (jptr)foobar + kPCInc);
  17   return 0;
  18 }
  19
  20 int main() {
  21   barrier_init(&barrier, 2);
  22   int const kHeapSize = 1024 * 1024;
  23   jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
  24   __tsan_java_init(jheap, kHeapSize);
  25   const int kBlockSize = 16;
  26   __tsan_java_alloc(jheap, kBlockSize);
  27   pthread_t th;
  28   pthread_create(&th, 0, Thread, (void*)jheap);
  29   __tsan_write1_pc((jptr)jheap, (jptr)barbaz + kPCInc);
  30   barrier_wait(&barrier);
  31   pthread_join(th, 0);
  32   __tsan_java_free(jheap, kBlockSize);
  33   fprintf(stderr, "DONE\n");
  34   return __tsan_java_fini();
  35 }
  36
  37 // CHECK: WARNING: ThreadSanitizer: data race
  38 // CHECK:     #0 foobar
  39 // CHECK:     #0 barbaz
  40 // CHECK: DONE