https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2232498c712acc97a38fdc297cbe53ba74d0ec2c
commit 2232498c712acc97a38fdc297cbe53ba74d0ec2c
Author: Corinna Vinschen <corinna-cyg...@cygwin.com>
Date: Thu Jul 25 10:40:03 2019 +0200
Cygwin: Don't change pgid to ctty pgid under debugger
_pinfo::set_ctty sets myself's pgid to the ctty pgid if the process has
been started from a non-Cygwin process. This isn't the right thing to
do when started from GDB. GDB starts the application via standard
Windows means, not via Cygwin fork/exec, so it's treated as being
a non-Cygwin parent.
But we want the app running in it's own process group. So skip this
step when running under a debugger
Signed-off-by: Corinna Vinschen <corinna-cyg...@cygwin.com>
Diff:
---
winsup/cygwin/pinfo.cc | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/winsup/cygwin/pinfo.cc b/winsup/cygwin/pinfo.cc
index cdbd8bd..123784e 100644
--- a/winsup/cygwin/pinfo.cc
+++ b/winsup/cygwin/pinfo.cc
@@ -554,7 +554,11 @@ _pinfo::set_ctty (fhandler_termios *fh, int flags)
syscall_printf ("attaching %s sid %d, pid %d, pgid %d, tty->pgid %d,
tty->sid %d",
__ctty (), sid, pid, pgid, tc.getpgid (), tc.getsid ());
if (!cygwin_finished_initializing && !myself->cygstarted
- && pgid == pid && tc.getpgid () && tc.getsid ())
+ && pgid == pid && tc.getpgid () && tc.getsid ()
+ /* Even GDB starts app via CreateProcess which changes cygstarted.
+ This results in setting the wrong pgid here, so just skip this
+ under debugger. */
+ && !being_debugged ())
pgid = tc.getpgid ();
/* May actually need to do this:
