c - segmentation fault after main returns

Question

I have a long program in c over Linux, that gives me segmentation fault after main returns. Its a long program, so I cant post it. So can you help me what can make such error?

Thank You.

Wow, Those answers came really fast. Thank you all. I think i worked it out, i forgot to malloc a string and used it as buffer. Now that I've malloced it, it does not signal me with a segmentation fault.

Once again, thank you all.

Answer 1

Guess: you might be accidentally corrupting the stack in main so it's lost the return address. Do you have a string buffer there that you could be overrunning?

If not, you should try:

• running the program under valgrind
• debugging the program with gdb to catch the crash and see where you are at that point; you can also debug the core file dumped

It might help to install glibc-debug packages if your distro has them since you'll be in glibc code at that point.