| // Copyright 2021 The Bazel Authors. |
| // |
| // Licensed under the Apache License, Version 2.0(the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http: // www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #if defined(__linux__) && defined(_GNU_SOURCE) |
| #include <dlfcn.h> |
| #include <assert.h> |
| |
| // Checks that pthread symbols are loadable. |
| // |
| // This test verifies that dynamically linked libraries which |
| // rely on pthread symbols can still access them. |
| // Incorrect order of linking dependencies may remove unused |
| // symbols and break shared libraries that are linked later. |
| int main() { |
| // Find symbol |
| void* symbol = dlsym(RTLD_NEXT, "pthread_getspecific"); |
| // Check that there is no error |
| assert(dlerror() == nullptr && symbol != nullptr); |
| |
| } |
| |
| #else//defined(__linux__) && defined(_GNU_SOURCE) |
| |
| int main() { |
| } |
| |
| #endif//defined(__linux__) && defined(_GNU_SOURCE) |