I recompiled wxGTK and CodeBlocks with debug enabled. Using valgrind, here is the output generated when I click "File - Open". I enabled the option "track-origins" for valgrind.
After "File - Open", the start of the error dump is with "Invalid read of size 1".
==1585== Syscall param write(buf) points to uninitialised byte(s)
==1585== at 0x3517A0D89B:

(in /lib64/libpthread-2.5.so)
==1585== by 0x3518A4667E:

(in /usr/lib64/libX11.so.6.2.0)
==1585== by 0x3518A4B6AE:

(in /usr/lib64/libX11.so.6.2.0)
==1585== by 0x3518A25447: XCreatePixmap (in /usr/lib64/libX11.so.6.2.0)
==1585== by 0x351C236A30:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21C10E:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21C1AA:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21F423:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21F766:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C235041:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21AAE0:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== by 0x351C21DA4F:

(in /usr/lib64/libcairo.so.2.9.2)
==1585== Address 0x6b0a3da is 90 bytes inside a block of size 16,384 alloc'd
==1585== at 0x4A05513: calloc (vg_replace_malloc.c:467)
==1585== by 0x3518A372B6: XOpenDisplay (in /usr/lib64/libX11.so.6.2.0)
==1585== by 0x351CC3A338: gdk_display_open (in /usr/lib64/libgdk-x11-2.0.so.0.1000.4)
==1585== by 0x351CC19ABC: gdk_display_open_default_libgtk_only (in /usr/lib64/libgdk-x11-2.0.so.0.1000.4)
==1585== by 0x351C72AF23: gtk_init_check (in /usr/lib64/libgtk-x11-2.0.so.0.1000.4)
==1585== by 0x57E5783: wxApp::Initialize(int&, wchar_t**) (app.cpp:484)
==1585== by 0x5743157: wxEntryStart(int&, wchar_t**) (init.cpp:288)
==1585== by 0x57432AF: wxInitialize(int, wchar_t**) (init.cpp:479)
==1585== by 0x574398E: wxInitializer::wxInitializer(int, wchar_t**) (init.h:81)
==1585== by 0x574330D: wxEntry(int&, wchar_t**) (init.cpp:417)
==1585== by 0x5743465: wxEntry(int&, char**) (init.cpp:460)
==1585== by 0x42F1B1: main (app.cpp:256)
==1585== Uninitialised value was created by a stack allocation
==1585== at 0x351C657CA0:

(in /usr/lib64/libgtk-x11-2.0.so.0.1000.4)
==1585==
==1585== Invalid read of size 1
==1585== at 0x4A0736E: strncmp (mc_replace_strmem.c:398)
==1585== by 0x3522C58418: __xmlParserInputBufferCreateFilename (in /usr/lib64/libxml2.so.2.6.26)
==1585== by 0x3522CD7114: xmlNewTextReaderFilename (in /usr/lib64/libxml2.so.2.6.26)
==1585== by 0x352602FACD:

(in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== by 0x352602FDA9:

(in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== by 0x352602FE48: gnome_vfs_mime_get_value (in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== by 0x352602D4CE: gnome_vfs_mime_get_icon (in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== by 0x3528C62393: gnome_icon_lookup (in /usr/lib64/libgnomeui-2.so.0.1600.0)
==1585== by 0x157910BF:

(in /usr/lib64/gtk-2.0/2.10.0/filesystems/libgnome-vfs.so)
==1585== by 0x15791392:

(in /usr/lib64/gtk-2.0/2.10.0/filesystems/libgnome-vfs.so)
==1585== by 0x352602A091:

(in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== by 0x352602A787:

(in /usr/lib64/libgnomevfs-2.so.0.1600.2)
==1585== Address 0xa00001c4f is not stack'd, malloc'd or (recently) free'd
==1585==
==1585==
==1585== Process terminating with default action of signal 11 (SIGSEGV)
==1585== General Protection Fault
==1585== at 0x351961032A: g_object_new (in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x351C6672FE: gtk_adjustment_new (in /usr/lib64/libgtk-x11-2.0.so.0.1000.4)
==1585== by 0x351C813F20:

(in /usr/lib64/libgtk-x11-2.0.so.0.1000.4)
==1585== by 0x351C81DE2B:

(in /usr/lib64/libgtk-x11-2.0.so.0.1000.4)
==1585== by 0x3519629C8F: g_type_create_instance (in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x35196118BC:

(in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x351960F723: g_object_newv (in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x351961014B: g_object_new_valist (in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x3519610380: g_object_new (in /lib64/libgobject-2.0.so.0.1200.3)
==1585== by 0x587F69F: wxListBox::Create(wxWindow*, int, wxPoint const&, wxSize const&, int, wxString const*, long, wxValidator const&, wxString const&) (listbox.cpp:361)
==1585== by 0x585B91C: wxCheckListBox::wxCheckListBox(wxWindow*, int, wxPoint const&, wxSize const&, int, wxString const*, long, wxValidator const&, wxString const&) (checklst.cpp:65)
==1585== by 0x5A57F7F: wxDebugReportDialog::wxDebugReportDialog(wxDebugReport&) (dbgrptg.cpp:342)
==1585==
==1585== HEAP SUMMARY:
==1585== in use at exit: 15,418,412 bytes in 136,874 blocks
==1585== total heap usage: 4,654,070 allocs, 4,517,196 frees, 613,446,441 bytes allocated
==1585==
==1585== LEAK SUMMARY:
==1585== definitely lost: 69,264 bytes in 174 blocks
==1585== indirectly lost: 119,072 bytes in 3,721 blocks
==1585== possibly lost: 8,116,809 bytes in 63,428 blocks
==1585== still reachable: 7,113,267 bytes in 69,551 blocks
==1585== suppressed: 0 bytes in 0 blocks
==1585== Rerun with --leak-check=full to see details of leaked memory
==1585==
==1585== For counts of detected and suppressed errors, rerun with: -v
==1585== ERROR SUMMARY: 37 errors from 13 contexts (suppressed: 51 from

Killed