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Subject:	PCB Use-after free bug [WAS: Re: [geda-user] PCB 2011-09-18 on
	WinXP - possible problems]
From:	Peter Clifton <pcjc2 AT cam DOT ac DOT uk>
To:	geda-user AT delorie DOT com
Date:	Fri, 23 Sep 2011 00:27:47 +0100
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On Thu, 2011-09-22 at 10:32 +0200, Vaclav Peroutka wrote:

> - If I want to create new layout after I opened some one before, after I =
enter layout name, PCB always crashes - I suppose that this is a bug.

Could you file this for me at:

http://launchpad.net/pcb/+filebug

You can add the following information to the report. It doesn't seem to
crash on Linux - but it ought to.. see this Valgrind output:


=3D=3D22404=3D=3D Invalid read of size 8
=3D=3D22404=3D=3D    at 0x4D82B3: ghid_route_style_selector_sync (ghid-rout=
e-style-selector.c:594)
=3D=3D22404=3D=3D    by 0x4BAB28: RouteStylesChanged (gtkhid-main.c:1157)
=3D=3D22404=3D=3D    by 0x49E0D3: hid_actionv (actions.c:247)
=3D=3D22404=3D=3D    by 0x447B7B: CreateNewPCB (create.c:194)
=3D=3D22404=3D=3D    by 0x4273E8: ActionNew (action.c:5902)
=3D=3D22404=3D=3D    by 0x49E0D3: hid_actionv (actions.c:247)
=3D=3D22404=3D=3D    by 0x49E483: hid_parse_actionstring (actions.c:331)
=3D=3D22404=3D=3D    by 0x4CCDE8: ghid_menu_cb (gui-top-window.c:373)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B484FA: signal_emit_unlocked_R (gsignal.c:3272)
=3D=3D22404=3D=3D    by 0x6B51B16: g_signal_emit_valist (gsignal.c:3003)
=3D=3D22404=3D=3D    by 0x6B51CE1: g_signal_emit (gsignal.c:3060)
=3D=3D22404=3D=3D  Address 0xd3c4458 is 13,880 bytes inside a block of size=
 14,120 free'd
=3D=3D22404=3D=3D    at 0x4C282E0: free (vg_replace_malloc.c:366)
=3D=3D22404=3D=3D    by 0x4273DE: ActionNew (action.c:5901)
=3D=3D22404=3D=3D    by 0x49E0D3: hid_actionv (actions.c:247)
=3D=3D22404=3D=3D    by 0x49E483: hid_parse_actionstring (actions.c:331)
=3D=3D22404=3D=3D    by 0x4CCDE8: ghid_menu_cb (gui-top-window.c:373)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B484FA: signal_emit_unlocked_R (gsignal.c:3272)
=3D=3D22404=3D=3D    by 0x6B51B16: g_signal_emit_valist (gsignal.c:3003)
=3D=3D22404=3D=3D    by 0x6B51CE1: g_signal_emit (gsignal.c:3060)
=3D=3D22404=3D=3D    by 0x5A821D2: _gtk_action_emit_activate (gtkaction.c:7=
94)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B47CD6: signal_emit_unlocked_R (gsignal.c:3202)
=3D=3D22404=3D=3D=20
=3D=3D22404=3D=3D Invalid read of size 8
=3D=3D22404=3D=3D    at 0x470944: Parse (parse_l.l:282)
=3D=3D22404=3D=3D    by 0x471913: ParseFont (parse_l.l:356)
=3D=3D22404=3D=3D    by 0x447973: CreateDefaultFont (create.c:941)
=3D=3D22404=3D=3D    by 0x447C58: CreateNewPCB (create.c:211)
=3D=3D22404=3D=3D    by 0x4273E8: ActionNew (action.c:5902)
=3D=3D22404=3D=3D    by 0x49E0D3: hid_actionv (actions.c:247)
=3D=3D22404=3D=3D    by 0x49E483: hid_parse_actionstring (actions.c:331)
=3D=3D22404=3D=3D    by 0x4CCDE8: ghid_menu_cb (gui-top-window.c:373)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B484FA: signal_emit_unlocked_R (gsignal.c:3272)
=3D=3D22404=3D=3D    by 0x6B51B16: g_signal_emit_valist (gsignal.c:3003)
=3D=3D22404=3D=3D    by 0x6B51CE1: g_signal_emit (gsignal.c:3060)
=3D=3D22404=3D=3D  Address 0xd3c4538 is 14,104 bytes inside a block of size=
 14,120 free'd
=3D=3D22404=3D=3D    at 0x4C282E0: free (vg_replace_malloc.c:366)
=3D=3D22404=3D=3D    by 0x4273DE: ActionNew (action.c:5901)
=3D=3D22404=3D=3D    by 0x49E0D3: hid_actionv (actions.c:247)
=3D=3D22404=3D=3D    by 0x49E483: hid_parse_actionstring (actions.c:331)
=3D=3D22404=3D=3D    by 0x4CCDE8: ghid_menu_cb (gui-top-window.c:373)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B484FA: signal_emit_unlocked_R (gsignal.c:3272)
=3D=3D22404=3D=3D    by 0x6B51B16: g_signal_emit_valist (gsignal.c:3003)
=3D=3D22404=3D=3D    by 0x6B51CE1: g_signal_emit (gsignal.c:3060)
=3D=3D22404=3D=3D    by 0x5A821D2: _gtk_action_emit_activate (gtkaction.c:7=
94)
=3D=3D22404=3D=3D    by 0x6B35253: g_closure_invoke (gclosure.c:774)
=3D=3D22404=3D=3D    by 0x6B47CD6: signal_emit_unlocked_R (gsignal.c:3202)
=3D=3D22404=3D=3D=20


--=20
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)

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