1 // Check that if the list of shared libraries changes between the two race
2 // reports, the second report occurring in a new shared library is still
3 // symbolized correctly.
4
5 // RUN: %clangxx_tsan -O1 %p/SharedLibs/load_shared_lib-so.cc \
6 // RUN: -fPIC -shared -o %t-so.so
7 // RUN: %clangxx_tsan -O1 %s -o %t && not %t 2>&1 | FileCheck %s
8
9 #include <dlfcn.h>
10 #include <pthread.h>
11 #include <stdio.h>
12
13 #include <string>
14
15 int GLOB = 0;
16
write_glob(void * unused)17 void *write_glob(void *unused) {
18 GLOB++;
19 return NULL;
20 }
21
race_two_threads(void * (* access_callback)(void * unused))22 void race_two_threads(void *(*access_callback)(void *unused)) {
23 pthread_t t1, t2;
24 pthread_create(&t1, NULL, access_callback, NULL);
25 pthread_create(&t2, NULL, access_callback, NULL);
26 pthread_join(t1, NULL);
27 pthread_join(t2, NULL);
28 }
29
main(int argc,char * argv[])30 int main(int argc, char *argv[]) {
31 std::string path = std::string(argv[0]) + std::string("-so.so");
32 race_two_threads(write_glob);
33 // CHECK: write_glob
34 void *lib = dlopen(path.c_str(), RTLD_NOW);
35 if (!lib) {
36 printf("error in dlopen(): %s\n", dlerror());
37 return 1;
38 }
39 void *(*write_from_so)(void *unused);
40 *(void **)&write_from_so = dlsym(lib, "write_from_so");
41 race_two_threads(write_from_so);
42 // CHECK: write_from_so
43 return 0;
44 }
45