BUG: ualarm(0,0) not clearing ualarms

Mon Feb 13 19:54:00 GMT 2006

On Mon, Feb 13, 2006 at 12:18:45PM -0700, Jerry D. Hedden wrote:
>I have encounted a bug in Cygwin whereby ualarm(0,0) is not clearing
>previously set ualarms. This first cropped up while using Perl, but I
>was able to reproduce the bug with the following 'C' program. The gist
>is that ualarm() is used several times, and then a final ualarm(0,0) is
>executed to clear them. This is followed by a usleep(). The alarm
>signal handler shows that 'bogus' alarms are going off during the
>usleep(). Without the signal handler, the program would terminate
>prematurely due to uncaught SIGALRM.

Thanks for the test case but I don't see any difference in operation
between cygwin and linux when I run it:
 % ./ualarm.unix
 First ualarm - one shot
 Second ualarm - one shot
 Last ualarm - repeats 3 times
 Clearing ualarm
 Sleeping
 Done
cgf
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