1// RUN: %clangxx_tsan -O1 %s -DLIB -fPIC -fno-sanitize=thread -shared -o %T/libignore_lib1.so
2// RUN: %clangxx_tsan -O1 %s -o %t
3// RUN: echo running w/o suppressions:
4// RUN: %deflake %run %t | FileCheck %s --check-prefix=CHECK-NOSUPP
5// RUN: echo running with suppressions:
6// RUN: %env_tsan_opts=suppressions='%s.supp' %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-WITHSUPP
7
8// Tests that interceptors coming from a dynamically loaded library specified
9// in called_from_lib suppression are ignored.
10
11// REQUIRES: stable-runtime
12
13#ifndef LIB
14
15#include <dlfcn.h>
16#include <stdlib.h>
17#include <stdio.h>
18#include <errno.h>
19#include <libgen.h>
20#include <string>
21
22int main(int argc, char **argv) {
23  std::string lib = std::string(dirname(argv[0])) + "/libignore_lib1.so";
24  void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
25  if (h == 0)
26    exit(printf("failed to load the library (%d)\n", errno));
27  void (*f)() = (void(*)())dlsym(h, "libfunc");
28  if (f == 0)
29    exit(printf("failed to find the func (%d)\n", errno));
30  f();
31}
32
33#else  // #ifdef LIB
34
35#include "ignore_lib_lib.h"
36
37#endif  // #ifdef LIB
38
39// CHECK-NOSUPP: WARNING: ThreadSanitizer: data race
40// CHECK-NOSUPP: OK
41
42// CHECK-WITHSUPP-NOT: WARNING: ThreadSanitizer: data race
43// CHECK-WITHSUPP: OK
44
45