Fix crash when using Emacs as commit editor for git.

* callproc.c (setpgrp): Remove macro, as we now use setpgid
and it is configured in conf_post.h.
(Fcall_process): Don't invoke both setsid and setpgid; the former
is enough, if it exists.
* callproc.c (Fcall_process, child_setup):
* process.c (create_process): Use setpgid.
* conf_post.h (setpgid) [!HAVE_SETPGID]: New macro, which substitutes
for the real thing.
* dispnew.c (init_display): Initialize the foreground group
if we are running a tty display.
* emacs.c (main): Do not worry about setpgrp; init_display does it now.
* lisp.h (init_foreground_group): New decl.
* sysdep.c (inherited_pgroup): New static var.
(init_foreground_group, tcsetpgrp_without_stopping)
(narrow_foreground_group, widen_foreground_group): New functions.
(init_sys_modes): Narrow foreground group.
(reset_sys_modes): Widen foreground group.

Fixes: debbugs:12697

1 files changed, 21 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 4edb3a7007b..4dc18b6909b 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,24 @@
+2012-10-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+        Fix crash when using Emacs as commit editor for git (Bug#12697).
+        * callproc.c (setpgrp): Remove macro, as we now use setpgid
+        and it is configured in conf_post.h.
+        (Fcall_process): Don't invoke both setsid and setpgid; the former
+        is enough, if it exists.
+        * callproc.c (Fcall_process, child_setup):
+        * process.c (create_process): Use setpgid.
+        * conf_post.h (setpgid) [!HAVE_SETPGID]: New macro, which substitutes
+        for the real thing.
+        * dispnew.c (init_display): Initialize the foreground group
+        if we are running a tty display.
+        * emacs.c (main): Do not worry about setpgrp; init_display does it now.
+        * lisp.h (init_foreground_group): New decl.
+        * sysdep.c (inherited_pgroup): New static var.
+        (init_foreground_group, tcsetpgrp_without_stopping)
+        (narrow_foreground_group, widen_foreground_group): New functions.
+        (init_sys_modes): Narrow foreground group.
+        (reset_sys_modes): Widen foreground group.
+
 2012-10-31  Michael Albinus  <michael.albinus@gmx.de>
 
         * dbusbind.c: Fix cut'n'waste error.  Use HAVE_DBUS_VALIDATE_INTERFACE.