Bug 81476 – scim+gtk-sharp: glibc detected free(): invalid pointer

• Product: Gentoo Linux
• Status: RESOLVED WORKSFORME

[Description Gábor Farkas 2005-02-10 02:58:21 UTC]

i use scim.

when i start a gtk-sharp application (any gtk-sharp app), it crashes with: 

*** glibc detected *** free(): invalid pointer: 0x0829df88 ***
Aborted

(well, not exactly at the beginning.. it crashes when it gets shown with a text-editable-field (where scim would do his job)..so for example muine starts fine, it crashes when you open the play-album window)

i'll attach a very simple gtk-sharp app that demonstrates the problem.

running it with mint (not mono), gives some more info:
*** glibc detected *** free(): invalid pointer: 0x08279db0 ***
Nothing can catch this exception: ExecutionEngineException: Abort (SIGABRT).
#0: 0x00009 calli.nat  in (wrapper managed-to-native) Gtk.Widget:gtk_widget_show_all (intptr) ([0x81a36a8] )
#1: 0x00003 vcall      in Gtk.Widget:ShowAll () ()
#2: 0x0001e vcallvirt  in GtkSharpTutorial.helloworld:Main (string[]) ([0x808d8c0] )

does this mean that it crashes in the gtk_widget_show_all method?

i tried this on ubuntu-linux, and there it works fine.

glibc-2.3.4.20041102 (+nptl +nptlonly)
gtk+2.6.1-r1
gtk-sharp-1.0.4-r1
mono-1.0.5-r3
scim-1.0.2

ps:
there is an another problem with scim (not related to gtk-sharp).
howto-reproduce:
1. launch gedit
2. choose the scim input method (if it not the default)
3. start the scim input method (usually ctrl+space)
4. select the m17n-ja-anthy method
5. enter some text
6. press F7 (commit as katakana)

*** glibc detected *** corrupted double-linked list: 0x085aef88 ***


so i wonder..is it some kind of problem with my gentoo? btw. should i report this scim+m17n problem as a separate bug?
gabor@dubb ~ $ gedit
*** glibc detected *** corrupted double-linked list: 0x085aef88 ***

[Comment 1 Gábor Farkas 2005-02-10 02:59:11 UTC]

Created attachment 50906 [details]
hello.cs

i attached hello.cs, a very simple gtk-sharp app.

compile it with:
"mcs hello.cs -pkg:gtk-sharp"

and run with:
"mono hello.exe"

or
"mint hello.exe"

[Comment 2 Peter Johanson (RETIRED) 2005-02-10 09:40:12 UTC]

This seems to be related to a problem with scim, not with gtk-sharp, but CCing dotnet anyway.

Can you get any useful backtraces when this happens?

[Comment 3 Gábor Farkas 2005-02-10 12:00:12 UTC]

useful-backtraces: how?

i tried this:
gtk, mono compiled with the "debug" USE flag.

gdb mint
run hello.exe
bt

backtrace attached...

is this bt useful?

[Comment 4 Gábor Farkas 2005-02-10 12:00:50 UTC]

Created attachment 50943 [details]
backtrace.txt

[Comment 5 Peter Johanson (RETIRED) 2005-02-11 10:12:13 UTC]

Well, that definitely seems to point to scim as the ultimate cause... Does the equivelant code in C cause the same error?

Trying to break on the scim_get_module_list() function and stepping from there may be insightful as well.

[Comment 6 Gábor Farkas 2005-02-11 12:07:52 UTC]

> Well, that definitely seems to point to scim as the ultimate cause... 
i see... but why isn't this happening on ubuntu? maybe some gcc issues?

> Does the equivelant code in C cause the same error?
i haven't created the EXACT same test-case in C, but i assume it would work, because i use scim all the time..it works in firefox, gedit, gaim, eclipse and so on ;)

> Trying to break on the scim_get_module_list() function 
> and stepping from there may be insightful as well.

how can i compile scim to contain debug symbols? there's no "debug" USE flag for scim....

[Comment 7 Peter Johanson (RETIRED) 2005-02-25 08:42:59 UTC]

Change your CFLAGS to have -g (and maybe remove all other flags to be safe) and add 'nostrip' to your features. Then re-emerge scim.

[Comment 8 MATSUU Takuto (RETIRED) 2006-11-11 09:49:33 UTC]

hello.cs works fine on my env.

sys-libs/glibc-2.4-r3
x11-libs/gtk+-2.8.19
dev-dotnet/gtk-sharp-2.8.2 and dev-dotnet/gtk-sharp-1.0.10
dev-lang/mono-1.1.13.8.1
app-i18n/scim-1.4.4

Please reopen if you still have problem.