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From: "ktietz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/56742] Optimization bug lead to uncaught throw
Date: Tue, 26 Mar 2013 21:14:00 -0000	[thread overview]
Message-ID: <bug-56742-4-4FpigoXw47@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-56742-4@http.gcc.gnu.org/bugzilla/>


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56742

--- Comment #2 from Kai Tietz <ktietz at gcc dot gnu.org> 2013-03-26 21:14:23 UTC ---
Hmm, yes indeed it is the -freorder-blocks option. One solution is to disallow
after reload for SEH-target to modify jumps.

The following patch fixes the issue for me.


Index: i386.c
===================================================================
--- i386.c      (Revision 197118)
+++ i386.c      (Arbeitskopie)
@@ -3941,6 +3941,19 @@
   register_pass (&insert_vzeroupper_info);
 }

+/* Implement TARGET_CANNOT_MODIFY_JUMPS_P.  */
+static bool
+ix86_cannot_modify_jumps_p (void)
+{
+  if (TARGET_SEH && reload_completed
+      && cfun)
+    return true;
+  return false;
+}
+
+#undef  TARGET_CANNOT_MODIFY_JUMPS_P
+#define TARGET_CANNOT_MODIFY_JUMPS_P ix86_cannot_modify_jumps_p
+
 /* Update register usage after having seen the compiler flags.  */

 static void


  parent reply	other threads:[~2013-03-26 21:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-26 15:56 [Bug c++/56742] New: " ktietz at gcc dot gnu.org
2013-03-26 15:59 ` [Bug c++/56742] " ktietz at gcc dot gnu.org
2013-03-26 20:11 ` pinskia at gcc dot gnu.org
2013-03-26 21:14 ` ktietz at gcc dot gnu.org [this message]
2013-03-26 23:43 ` steven at gcc dot gnu.org
2013-03-27  9:40 ` ktietz at gcc dot gnu.org
2013-03-27 13:48 ` [Bug rtl-optimization/56742] " jason at gcc dot gnu.org
2013-03-27 14:43 ` ktietz at gcc dot gnu.org
2013-03-27 14:50 ` [Bug rtl-optimization/56742] [4.8 regression] " ktietz at gcc dot gnu.org
2013-04-26 18:16 ` jakub at gcc dot gnu.org
2013-05-22 20:54 ` [Bug rtl-optimization/56742] [4.8/4.9 " rth at gcc dot gnu.org
2013-05-22 20:55 ` rth at gcc dot gnu.org
2013-05-22 20:57 ` rth at gcc dot gnu.org
2013-05-22 23:19 ` rth at gcc dot gnu.org
2013-05-31 23:18 ` rth at gcc dot gnu.org
2014-01-14 21:15 ` g63marty at yahoo dot com
2014-01-14 21:20 ` g63marty at yahoo dot com

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