#1460 Problem with the kill builtin in MSYS bash

[Peter Rosin]

Hi!

I found an automake test that didn't behave properly (cont5.test). It
had a success rate of about 50% for me on MSYS. I have reduced it to
the attached simple test case, which fails much more often than the
original code.

I.e. start a process in the background, check if it is alive with
kill -0 (which it should be), and report failure if it isn't. But it
appears that kill fails if it is executed too soon after the new
process was created...

Now, I know that I'm not personally up to date, but someone
else stated that it also happens with up to date software.

$ sh --version
GNU bash, version 3.1.0(1)-release (i686-pc-msys)
Copyright (C) 2005 Free Software Foundation, Inc.

$ uname -a
MINGW32_NT-5.1 PEDA-PC 1.0.11(0.46/3/2) 2009-07-11 17:46 i686 Msys

[Peter Rosin]

killtest, a small test case

[Cesar Strauss]

Thanks for the report and test case. I can reproduce it every time.

I believe I have found and fixed a race condition when determining if a process is open.

Please try copying the following file over your existing msys-1.0.dll:

http://prdownloads.sourceforge.net/mingw/msys-1.0.dll.20100810?download

Does it solve the issue for you?

Regards,
Cesar

[Peter Rosin]

Hi Cesar,

Yes, with this dll it works just fine for me, thanks!

while :; do ./killtest; done

produces a long line of successes.

Cheers,
Peter

[Cesar Strauss]

Thanks for the confirmation. The fix is now in CVS and will be present in the next release.

Cheers,
Cesar