On Thu, 8 Jul 2004, Corinna Vinschen wrote:
> On Jul 8 11:49, Daniel Lungu wrote:
> > Feel like bash tcsh on Cygwin mess up with negative exit status from a cl
> > compiled .exe
>
> The answer is "don't do that". Use positive values in the range from
> 0 to 255. See
> http://www.opengroup.org/onlinepubs/009695399/functions/exit.html
>
> Corinna
Corinna,
Actually, it looks like another buglet in Cygwin. The code in
spawn_guts() in spawn.cc (line 847 in CVS HEAD) simply binary-ORs the
exitcode value returned by GetExitCodeProcess with the "res" variable.
However, the "res" variable is also used to carry some flags, and a
negative exitcode, being a full DWORD, accidentally sets those, so all
sorts of havoc can potentially occur (and I'm surprised that all that
happens is the wrong exit code).
I could work on a patch, but just saying that the errorcode should be
binary-ANDed with 0xFF before being binary-ORed with "res" should be
faster.
HTH,
Igor
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