Bug 163083
| Summary: | Statically linked C++ program using pthreads will segfault | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jason Beardsley <jbeardsley> |
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED DUPLICATE | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2005-07-13 11:54:08 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.8) Gecko/20050511 Description of problem: A C++ program that uses pthreads and the STL (or string) will segfault. If no STL header is included, the program does not crash. This is apparently due to certain pthreads functions not being included in the output executable. This bug may duplicate #115157, and I apologize if so, but hopefully the included test case will be useful. Version-Release number of selected component (if applicable): gcc-4.0.0-8 How reproducible: Always Steps to Reproduce: foo.cpp: #include <pthread.h> #include <string> // or <list> or <vector> etc int main() { pthread_mutex_t lock; pthread_mutex_init(&lock, NULL); return 0; } 1. Compile as follows: g++ -g -static foo.cpp -o foo -lpthread 2. Run it in gdb. 3. Note the address of pthread_mutex_init is 0. Actual Results: GNU gdb Red Hat Linux (6.3.0.0-1.21rh) This GDB was configured as "i386-redhat-linux-gnu"...Using host libthread_db library "/lib/libthread_db.so.1". (gdb) run Starting program: /home/jason/t/foo Reading symbols from shared object read from target memory...done. Loaded system supplied DSO at 0xad7000 Program received signal SIGSEGV, Segmentation fault. 0x00000000 in ?? () (gdb) where #0 0x00000000 in ?? () #1 0x08048232 in main () at foo.cpp:7 Expected Results: No segfault Additional info: The suggestion in #115157 to forcibly link in all of libpthread.a is a valid workaround. Linking dynamically also avoids the problem, however this is not possible in certain situations (e.g. creating a profiled executable requires static linking to be useful).