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List:       gcc-patches
Subject:    [incremental] Patch: FYI: dump stack on ICE
From:       Tom Tromey <tromey () redhat ! com>
Date:       2008-02-29 16:31:58
Message-ID: m3ir07k9kx.fsf () fleche ! redhat ! com
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I'm checking this in on the incremental-compiler branch.

This is a useful little hack that gets stack traces for ICEs.  This
makes it a bit simpler for me to classify ICEs when looking through
the testsuite logs.

This isn't suitable for merging to the trunk in this form.  I could
clean it up if anybody cares.

Tom

ChangeLog:
2008-02-29  Tom Tromey  <tromey@redhat.com>

	* diagnostic.c (diagnostic_action_after_output) <DK_ICE>: Print
	stack trace.

Index: diagnostic.c
===================================================================
--- diagnostic.c	(revision 132688)
+++ diagnostic.c	(working copy)
@@ -1,5 +1,5 @@
 /* Language-independent diagnostic subroutines for the GNU Compiler Collection
-   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
    Free Software Foundation, Inc.
    Contributed by Gabriel Dos Reis <gdr@codesourcery.com>
 
@@ -238,6 +238,12 @@
       break;
 
     case DK_ICE:
+      {
+	char cmdline[50];
+	sprintf (cmdline, "pstack %d\n", (int) getpid ());
+	system (cmdline);
+      }
+
       if (context->abort_on_error)
 	real_abort ();
 
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