Re: Catching SIGFPE two times

[Andrew Haley <aph@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

thomas.mertes@xxxxxx wrote:
> 
> Has someone an idea how a program can have more than
> one SIGFPE catched with a setjmp/longjmp exception?

Because you used longjmp() to leave the handler, the kernel thinks
you're still in the handler!  You need to re-enable the handler with
sigprocmask(2)

  sigset_t sigs;
  sigemptyset (&sigs);
  sigaddset (&sigs, signum);
  sigprocmask (SIG_UNBLOCK, &sigs, NULL);

Andrew.