[Geany] crash on startup

[Sascha Heid]

> I don't think the ?? stack frames are because of missing debug symbols.
> It looks like stack corruption, so the backtrace is of no use as the
> problem occurred some time before the segfault.
>
> I'm thinking the segfault may only occur because of something changed
> in GTK 2.10.0 or the corresponding GLib (Sascha: what version of GLib?)
>
> The output of Valgrind may help diagnosing the problem when the
> corruption first occurs:
> valgrind --tool=addrcheck --leak-check=no /path/to/geany
>
> I haven't tested Geany with GTK 2.10.0 yet. It's difficult to say
> whether the problem is Geany or GTK 2.10.0 or the Gentoo system...

I was unable to get more debugging symbols yet (i used USE="debug" and
removed fomit-frame-pointer from my flags).
I wanted to try valgrind but couldn't figure out where to get the
addrcheck tool, so i used memcheck, maybe its of some use:

valgrind --tool=memcheck --leak-check=no /usr/bin/geany
==18795== Memcheck, a memory error detector.
==18795== Copyright (C) 2002-2006, and GNU GPL'd, by Julian Seward et al.
==18795== Using LibVEX rev 1606, a library for dynamic binary translation.
==18795== Copyright (C) 2004-2006, and GNU GPL'd, by OpenWorks LLP.
==18795== Using valgrind-3.2.0, a dynamic binary instrumentation framework.
==18795== Copyright (C) 2000-2006, and GNU GPL'd, by Julian Seward et al.
==18795== For more details, rerun with: -v
==18795==
==18795== Syscall param writev(vector[...]) points to uninitialised byte(s)
==18795==    at 0x477B972: (within /lib/libc-2.4.so)
==18795==    by 0x48204DD: (within /usr/lib/libX11.so.6.2.0)
==18795==  Address 0x4AA4F0C is 324 bytes inside a block of size 16,384 alloc'd
==18795==    at 0x40206CE: calloc (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==18795==    by 0x4810653: XOpenDisplay (in /usr/lib/libX11.so.6.2.0)
==18795==
==18795== Syscall param write(buf) points to uninitialised byte(s)
==18795==    at 0x47742B3: write (in /lib/libc-2.4.so)
==18795==    by 0x482055D: (within /usr/lib/libX11.so.6.2.0)
==18795==  Address 0x4AA4F29 is 353 bytes inside a block of size 16,384 alloc'd
==18795==    at 0x40206CE: calloc (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==18795==    by 0x4810653: XOpenDisplay (in /usr/lib/libX11.so.6.2.0)
==18818==
==18818== ERROR SUMMARY: 5 errors from 2 contexts (suppressed: 109 from 1)
==18818== malloc/free: in use at exit: 2,874,531 bytes in 22,160 blocks.
==18818== malloc/free: 147,611 allocs, 125,451 frees, 13,831,961 bytes
allocated.
==18818== For a detailed leak analysis,  rerun with: --leak-check=yes
==18818== For counts of detected errors, rerun with: -v
==18795==
==18795== Invalid free() / delete / delete[]
==18795==    at 0x402114C: free (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==18795==    by 0x457B830: g_free (in /usr/lib/libglib-2.0.so.0.1200.1)
==18795==    by 0x4173C9B: (within /usr/lib/libgtk-x11-2.0.so.0.1000.1)
==18795==  Address 0x61E60E0 is 224 bytes inside a block of size 504 alloc'd
==18795==    at 0x4020562: memalign (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==18795==    by 0x40205FF: posix_memalign (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==18795==    by 0x458AD9B: (within /usr/lib/libglib-2.0.so.0.1200.1)


glib is 2.12.1

Regards
Sascha