race_range_pc.cpp
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// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
// This test fails on powerpc64 big endian.
// The Tsan report is returning wrong information about
// the location of the race.
// XFAIL: powerpc64-unknown-linux-gnu
#include "test.h"
typedef unsigned long uptr;
extern "C" void __tsan_read_range_pc(uptr addr, uptr size, uptr pc);
extern "C" void __tsan_write_range_pc(uptr addr, uptr size, uptr pc);
void foobar() {
}
void barbaz() {
}
void *Thread(void *p) {
barrier_wait(&barrier);
__tsan_read_range_pc((uptr)p, 32, (uptr)foobar + kPCInc);
return 0;
}
int main() {
barrier_init(&barrier, 2);
int a[128];
pthread_t th;
pthread_create(&th, 0, Thread, (void*)a);
__tsan_write_range_pc((uptr)(a+2), 32, (uptr)barbaz + kPCInc);
barrier_wait(&barrier);
pthread_join(th, 0);
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK: #0 foobar
// CHECK: #0 barbaz
// CHECK: DONE