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 17 void *write_glob(void *unused) { 18 GLOB++; 19 return NULL; 20 } 21 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 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
