goocanvas.Widget segfault

[Gian Mario Tagliaretti]

Using goocanvas.Widget result in a segfault, gdb backtrace:

gdb> run testwidget.py
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1211132224 (LWP 3664)]
testwidget.py:35: GtkWarning: gdk_cairo_create: assertion `GDK_IS_DRAWABLE (drawable)' failed
  window.show_all ()

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1211132224 (LWP 3664)]
_______________________________________________________________________________
     eax:00000000 ebx:B704E5EC ecx:B704E5EC edx:00000000 eflags:00200286
     esi:00000000 edi:00000000 esp:BFFD9E00 ebp:BFFD9E28 eip:B74FADEF
     cs:0073 ds:007B es:007B fs:0000 gs:0033 ss:007B o d I t S z a P c
[007B:BFFD9E00]---------------------------------------------------------[stack]
BFFD9E30 : 00 00 00 00 00 00 00 00 - 00 00 00 40 EC E5 04 B7 ...........@....
BFFD9E20 : EC E5 04 B7 50 50 18 08 - 48 9E FD BF D0 51 04 B7 ....PP..H....Q..
BFFD9E10 : 8E 2C 63 B7 04 2E 63 B7 - 68 2E 63 B7 EC E5 04 B7 .,c...c.h.c.....
BFFD9E00 : 8C 64 65 B7 00 00 00 00 - 28 9E FD BF 8D 5E 5E B7 .de.....(....^^.
[007B:BFFD9E00]---------------------------------------------------------[ data]
BFFD9E00 : 8C 64 65 B7 00 00 00 00 - 28 9E FD BF 8D 5E 5E B7 .de.....(....^^.
BFFD9E10 : 8E 2C 63 B7 04 2E 63 B7 - 68 2E 63 B7 EC E5 04 B7 .,c...c.h.c.....
[0073:B74FADEF]---------------------------------------------------------[ code]
0xb74fadef <cairo_set_line_width+15>: mov 0x4(%esi),%eax
0xb74fadf2 <cairo_set_line_width+18>: test %eax,%eax
0xb74fadf4 <cairo_set_line_width+20>: je 0xb74fae00 <cairo_set_line_width+32>
0xb74fadf6 <cairo_set_line_width+22>: mov 0xfffffff8(%ebp),%ebx
0xb74fadf9 <cairo_set_line_width+25>: mov 0xfffffffc(%ebp),%esi
0xb74fadfc <cairo_set_line_width+28>: mov %ebp,%esp
------------------------------------------------------------------------------
0xb74fadef in cairo_set_line_width () from /usr/lib/libcairo.so.2

[Gustavo Carneiro (gjc)]

The bug is goocanvas, not pygoocanvas: goocanvas doesn't like embedding widgets before the canvas widget is realized. You can work around it by changing the test program slightly.

[Gustavo Carneiro (gjc)]

Since goocanvas is not registered in launchpad I have to close this (can't reassign).