Move SIGPIPE suppression to gtk_init and document it

Some people were unhappy with doing it deep inside the lpr print
backend at an unpredictable time, and SIGPIPE is almost never
wanted anyway.

1 files changed, 11 insertions, 0 deletions

diff --git a/gtk/gtkmain.c b/gtk/gtkmain.c
index e47e1beab3..2bbc96d22b 100644
--- a/gtk/gtkmain.c
+++ b/gtk/gtkmain.c
@@ -686,6 +686,8 @@ do_post_parse_initialization (int    *argc,
 
   gettext_initialization ();
 
+  signal (SIGPIPE, SIG_IGN);
+
   if (g_fatal_warnings)
     {
       GLogLevelFlags fatal_mask;
@@ -985,6 +987,15 @@ gtk_init_check (int	 *argc,
  * the GUI for some reason. If you want your program to fall back to a 
  * textual interface you want to call gtk_init_check() instead.
  * </para></note>
+ *
+ * <note><para>
+ * Since 2.18, GTK+ calls <literal>signal (SIGPIPE, SIG_IGN)</literal>
+ * during initialization, to ignore SIGPIPE signals, since these are
+ * almost never wanted in graphical applications. If you do need to
+ * handle SIGPIPE for some reason, reset the handler after gtk_init(),
+ * but notice that other libraries (e.g. libdbus or gvfs) might do
+ * similar things.
+ * </para></note>
  **/
 void
 gtk_init (int *argc, char ***argv)