[racket-dev] crash with subprocess

Hi,

i am experiencing random crashes when using subprocess followed by a
subprocess-wait. My test program, that i call via subprocess is special,
in that it kills itself very fast with a sigkill after executing.

Unfortunately, i wasn't able to reproduce this behavior in a small sample
but i could record three different core dumps with full debug info  
(attached).
I tested with my own build of git head and 5.3.0.21.

All crashes/freezes are preceded by the message
"unexpected error from waitpid(138321448[1]): 10"
with a completely invalid pid argument to waitpid. The errno 10
is "No child processes".

What follows this message are random freezes (ctrl+c has no effect),
heap corruptions or segfaults.

I hope the supplied information is enough to locate whatever goes wrong,
otherwise i can, of course send in more.

Tobias




-- 
---------------------------------------------------------
Tobias Hammer
DLR / Institute of Robotics and Mechatronics
Muenchner Str. 20, D-82234 Wessling
Tel.: 08153/28-1487
Mail: tobias.hammer at dlr.de
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: log1.txt
URL: <http://lists.racket-lang.org/dev/archive/attachments/20120830/5a15d27c/attachment-0003.txt>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: log2.txt
URL: <http://lists.racket-lang.org/dev/archive/attachments/20120830/5a15d27c/attachment-0004.txt>
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: log3.txt
URL: <http://lists.racket-lang.org/dev/archive/attachments/20120830/5a15d27c/attachment-0005.txt>