loading a pdf file generates lots of groups.

[Alvin Penner]

- Windows XP, Inkscape rev 13283
- the attached pdf file causes a crash on loading, with the following console messages, below:
- this file was originally part of Bug 1217602, which has since been fixed. The problem in that case was lots of nested groups.
- not reproduced on Inkscape 0.48.4
- not reproduced if I use the "PDF via poppler-cairo" input file type
- crash occurs only if I run Inkscape from a DOS prompt. No crash if I right-click on the file from the Explorer gui and open it using Inkscape

.................................................................

_create_dc_and_bitmap: The operation completed successfully.

Emergency save activated!
Emergency save completed. Inkscape will close now.
If you can reproduce this crash, please file a bug at www.inkscape.org
with a detailed description of the steps leading to the crash, so we can fix it.

_create_dc_and_bitmap: The operation completed successfully.

[Alvin Penner (apenner)]

when it does succeed, then it produces a very large number of nested groups, svg file attached.

[Alvin Penner (apenner)]

backtrace:

[New thread 3220.0xce8]
[New thread 3220.0xc0]
[New thread 3220.0x7c8]
[New thread 3220.0xf3c]
_create_dc_and_bitmap: The operation completed successfully.

Program received signal SIGSEGV, Segmentation fault.
0x68ddf2ad in cairo_image_surface_get_data ()
   from C:\InkscapeBZR\inkscape\libcairo-2.dll
(gdb) bt
#0 0x68ddf2ad in cairo_image_surface_get_data ()
   from C:\InkscapeBZR\inkscape\libcairo-2.dll
#1 0x6c38d268 in _gdk_pixmap_new ()
   from C:\InkscapeBZR\inkscape\libgdk-win32-2.0-0.dll
#2 0x6c35f694 in gdk_window_process_updates_internal ()
   from C:\InkscapeBZR\inkscape\libgdk-win32-2.0-0.dll
#3 0x6c361640 in gdk_window_process_updates ()
   from C:\InkscapeBZR\inkscape\libgdk-win32-2.0-0.dll
#4 0x00d01e86 in sp_desktop_widget_update_zoom ()
#5 0x00000000 in ?? ()
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x68ddf2ad in cairo_image_surface_get_data ()
   from C:\InkscapeBZR\inkscape\libcairo-2.dll
(gdb) c
Continuing.

Program exited with code 030000000005.
(gdb) c
The program is not being run.
(gdb) q

[Alvin Penner (apenner)]

jftr I can no longer reproduce the crash on Windows XP, Inkscape rev 13288.

However the file does point out a weakness of the pdf import routine, which generates a very large number of unnecessary nested groups. This bloats the size of the svg file. The original file Suite 545.pdf has a size of 11 K. The imported file Suite 545.svg has a size of 985 K. The svg file in one instance appears to have nested groups to a depth of more than 256. (Bug 1217602)

[jazzynico (jazzynico)]

>The imported file Suite 545.svg has a size of 985 K. The svg file in one instance appears to have nested groups to a depth of more than 256.

Reproduced on Crunchbang Waldorf, Inkscape trunk revision 13446.

[su_v (suv-lp)]

Removing milestone - the remaining issue is generic, and not a regression related to changes between 0.48 and 0.91.