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Fwd: bash kill(1) doesn't report errors when $(ulimit -i) is exceeded


From: Cedric Blancher
Subject: Fwd: bash kill(1) doesn't report errors when $(ulimit -i) is exceeded
Date: Sun, 14 Jul 2013 21:06:50 +0200

Trying to repost because the list didn't pass the bug report through yet.

Ced

---------- Forwarded message ----------
From: Cedric Blancher <address@hidden>
Date: 14 July 2013 20:38
Subject: bash kill(1) doesn't report errors when $(ulimit -i) is exceeded
To: address@hidden


The tests below is from the ongoing work of David Korn and Roland
Mainz to make signals in ksh93 reliable and predictable (so far no
shell tested really does it). I derived one of their tests and found
that bash doesn't handle realtime signals properly either:
bash -c '{ trap ":" RTMIN ; kill -STOP ${BASHPID} ; true ; } & ((
pid=$! )) ; sleep 5 ; maxi=$(ulimit -i) ; for ((i=0 ; i < (maxi*2) ;
i++)) ; do kill -RTMIN $pid ; done ; kill -CONT $pid ; wait ; true'
This prints 1, but IMO should print $(ulimit -i) as integer value and
then lots of errors from kill(1) because no further signals can be
queued to $pid because ulimit -i is exceeded for that child process.

Bash version is GNU bash, version 4.2.42(1)-release
(x86_64-suse-linux-gnu) on Suse 12.3, 64bit

Ced
--
Cedric Blancher <address@hidden>
Institute Pasteur


-- 
Cedric Blancher <address@hidden>
Institute Pasteur



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