Does it work with post-mortem debugging?
Not very well. Generally, the core file does not correspond to the thread that crashed. The reason is that the kernel will not dump core for a process that shares its memory with other processes, such as the other threads of your program. So, the thread that crashes silently disappears without generating a core file. Then, all other threads of your program die on the same signal that killed the crashing thread. (This is required behavior according to the POSIX standard.) The last one that dies is no longer sharing its memory with anyone else, so the kernel generates a core file for that thread. Unfortunately, that’s not the thread you are interested in.
Not very well. Generally, the core file does not correspond to the thread that crashed. The reason is that the kernel will not dump core for a process that shares its memory with other processes, such as the other threads of your program. So, the thread that crashes silently disappears without generating a core file. Then, all other threads of your program die on the same signal that killed the crashing thread. (This is required behavior according to the POSIX standard.) The last one that dies is no longer sharing its memory with anyone else, so the kernel generates a core file for that thread. Unfortunately, that’s not the thread you are interested in.
