a signal handler with SIGSEGV

[lxlenovostar]

I want to print call stack, when a SIGSEGV happen.

void handle_signal_handler(int sig) {
 243     DEBUG_INFO("get signal: %d\n", sig);
 244     if (sig == SIGSEGV) {
 245         dump_trace();
 246     }                
 247      
 248     re_cancel();
 249 }   

In main function:
2889 EOR(re_main(handle_signal_handler));

I think handle_signal_handler will be call by signal 2(SIGINT), not signal 11(SIGSEGV).

This is why? Thank you.

[alfredh]

printing the call stack should be done with a debugger like gdb or lldb.

if you want to print the call stack in your program, you can try the backtrace function:

http://man7.org/linux/man-pages/man3/backtrace.3.html

Alfred