A few days ago, I posted a bug report on this mailing list, see
http://cygwin.com/ml/cygwin/2012-12/msg00155.html
There hasn't been any reply to it. Maybe I should have started a new
thread, maybe it was just too much at once, I don't know. But I still
think that this needs to be fixed, so I just post it again. Here is a
test case:
####################
#include <stdio.h>
#include <signal.h>
int main()
{
int signr;
sigset_t sigusr1, sigusr2, pending;
sigemptyset(&sigusr1);
sigemptyset(&sigusr2);
sigemptyset(&pending);
sigaddset(&sigusr1, SIGUSR1);
sigaddset(&sigusr2, SIGUSR2);
sigprocmask(SIG_BLOCK, &sigusr1, NULL);
sigprocmask(SIG_BLOCK, &sigusr2, NULL);
printf("pid: %d\n", getpid());
sigwait(&sigusr1, &signr);
sigpending(&pending);
sigwait(&sigusr2, &signr);
return(0);
}
####################
$ uname -a
CYGWIN_NT-6.1-WOW64 zoppo 1.7.18s(0.263/5/3) 20121207 21:00:18 i686 Cygwin
$ ./test_case
pid: 2640
// In another console, type(in this order!)
$ kill -SIGUSR2 2640
$ kill -SIGUSR1 2640
// Then the program gives:
Segmentation fault (core dumped)
$
The program doesn't crash if I send SIGUSR1 first and then SIGUSR2.
Regards,
Andreas
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