On 23/07/2019 17:54, Corinna Vinschen wrote:
Hi Ken,

On Jul 23 16:12, Ken Brown wrote:
According to POSIX, "The getpgrp() function shall always be successful
and no return value is reserved to indicate an error."  Cygwin's
getpgrp() is defined in terms of getpgid(), which is allowed to fail.

But it shouldn't fail for the current process.  Why should pinfo::init
fail for myself if it begins like this?

   if (myself && n == myself->pid)
       procinfo = myself;
       destroy = 0;

I fear this patch would only cover up the problem still persisting
under the hood.

I agree.

There is presumably a class of programs which require getpgrp() to return the correct value for correct operation, which cannot be 0 (since that cannot be a pid).

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