Crash using copy and paste (reproducable)

[Pulle]

Although this bug is already reported on the BerliOs-ProjectPage, I decided to start a new thread because I've found a way to reproduce this crash and to show that this bug is still existant in current svn-versions.

The problem: CodeBlocks crashes quite often when doing copy & paste. I don't know if it depends on the text which should be pasted, but this is the way I can reproduce the crash:
1. start C::B and open or create an empty cpp-file.
2. paste the following code "as it is" into the empty cpp-file

Code Select Expand


#include <gtkmm.h>
#include <gtkmm/button.h>
#include <gtkmm/image.h>
#include <libglademm-2.4/libglademm/xml.h>
#include <iostream>

3. mark the complete code in the cpp-file.
4. press copy and then paste and C::B should crash.

The crash happens very often and not only when pasting this special piece of code, but this special case was the only one I found to reproduce it.

I'm using Arch-Linux 0.7.2:
uname -a
2.6.18-ARCH #1 SMP PREEMPT Thu Nov 30 21:32:54 CET 2006 i686 AMD Athlon(tm) 64 Processor 3200+ AuthenticAMD GNU/Linux

The bug occured with
svn build rev 3353 (2006-12-07 14:49:33) gcc 4.1.2 Linux/unicode
as well as with a version from the 3rd of december (don't remember the version-number).

Here's the backtrace:

Code Select Expand

codeblocks -d
*** glibc detected *** codeblocks: double free or corruption (!prev): 0x08c5a0d8 ***
======= Backtrace: =========
/lib/libc.so.6[0xb72fdb10]
/lib/libc.so.6(__libc_free+0x89)[0xb72ff1a9]
/usr/lib/libwx_gtk2u_core-2.6.so.0[0xb773fe3c]
/usr/lib/libgtk-x11-2.0.so.0[0xb6ff89c6]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x13b)[0xb6e3007b]
/usr/lib/libgobject-2.0.so.0[0xb6e404e9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x899)[0xb6e419a9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_by_name+0xee)[0xb6e4475e]
/usr/lib/libgtk-x11-2.0.so.0[0xb70556e4]
/usr/lib/libgtk-x11-2.0.so.0(gtk_selection_convert+0x145)[0xb7056565]
/usr/lib/libwx_gtk2u_core-2.6.so.0(_ZN11wxClipboard7GetDataER12wxDataObject+0x1ec)[0xb774009c]
/usr/local/lib/libcodeblocks.so.0(_ZN11ScintillaWX5PasteEv+0x17f)[0xb7d9a04f]
/usr/local/lib/libcodeblocks.so.0(_ZN6Editor7WndProcEjml+0x1c5a)[0xb7dc77ba]
/usr/local/lib/libcodeblocks.so.0(_ZN13ScintillaBase7WndProcEjml+0x2b7)[0xb7e4c437]
/usr/local/lib/libcodeblocks.so.0(_ZN11ScintillaWX7WndProcEjml+0x44)[0xb7d985c4]
/usr/local/lib/libcodeblocks.so.0(_ZN11wxScintilla7SendMsgEill+0x2f)[0xb7d9ca0f]
/usr/local/lib/libcodeblocks.so.0(_ZN11wxScintilla5PasteEv+0x32)[0xb7d9f062]
/usr/local/lib/libcodeblocks.so.0(_ZN8cbEditor5PasteEv+0x25)[0xb7bd6d95]
codeblocks(_ZN9MainFrame11OnEditPasteER14wxCommandEvent+0x38)[0x807aff8]
/usr/lib/libwx_baseu-2.6.so.0(_ZNK12wxAppConsole11HandleEventEP12wxEvtHandlerMS0_FvR7wxEventES3_+0x35)[0xb7533395]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler21ProcessEventIfMatchesERK21wxEventTableEntryBasePS_R7wxEvent+0x92)[0xb75bf662]
/usr/lib/libwx_baseu-2.6.so.0(_ZN16wxEventHashTable11HandleEventER7wxEventP12wxEvtHandler+0x7b)[0xb75bf7ab]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0xcf)[0xb75bf91f]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_baseu-2.6.so.0(_ZN12wxEvtHandler12ProcessEventER7wxEvent+0x6e)[0xb75bf8be]
/usr/lib/libwx_gtk2u_core-2.6.so.0[0xb77c0568]
/usr/lib/libgobject-2.0.so.0(g_cclosure_marshal_VOID__VOID+0x4b)[0xb6e3d41b]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x13b)[0xb6e3007b]
/usr/lib/libgobject-2.0.so.0[0xb6e404e9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x899)[0xb6e419a9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit+0x29)[0xb6e41b59]
/usr/lib/libgtk-x11-2.0.so.0[0xb711002d]
/usr/lib/libgobject-2.0.so.0(g_closure_invoke+0x13b)[0xb6e3007b]
/usr/lib/libgobject-2.0.so.0[0xb6e404e9]
/usr/lib/libgobject-2.0.so.0(g_signal_emit_valist+0x678)[0xb6e41788]
======= Memory map: ========
08048000-080df000 r-xp 00000000 03:02 121214     /usr/local/bin/codeblocks
080df000-080e5000 rwxp 00096000 03:02 121214     /usr/local/bin/codeblocks
080e5000-08cd4000 rwxp 080e5000 00:00 0          [heap]
b285b000-b285c000 ---p b285b000 00:00 0
b285c000-b305c000 rwxp b285c000 00:00 0
b305c000-b3068000 r-xp 00000000 03:02 121681     /usr/share/fonts/TTF/VeraMoBd.ttf
b3068000-b3069000 ---p b3068000 00:00 0
b3069000-b3869000 rwxp b3069000 00:00 0
b3869000-b3876000 r-xp 00000000 03:02 121680     /usr/share/fonts/TTF/VeraMono.ttf
b3876000-b388c000 r-xp 00000000 03:02 121460     /usr/local/share/codeblocks/plugins/libcb_koders.so
b388c000-b388d000 rwxp 00016000 03:02 121460     /usr/local/share/codeblocks/plugins/libcb_koders.so
b388d000-b388e000 ---p b388d000 00:00 0
b388e000-b408e000 rwxp b388e000 00:00 0
b408e000-b4130000 r-xp 00000000 03:02 121260     /usr/local/share/codeblocks/plugins/libcodecompletion.so
b4130000-b4135000 rwxp 000a1000 03:02 121260     /usr/local/share/codeblocks/plugins/libcodecompletion.so
b4135000-b413d000 rwxp b4135000 00:00 0
b413d000-b4150000 r-xp 00000000 03:02 121491     /usr/local/share/codeblocks/plugins/libhelp_plugin.so
b4150000-b4151000 rwxp 00013000 03:02 121491     /usr/local/share/codeblocks/plugins/libhelp_plugin.so
b4151000-b4161000 r-xp 00000000 03:02 121231     /usr/local/share/codeblocks/plugins/libclasswizard.so
b4161000-b4162000 rwxp 00010000 03:02 121231     /usr/local/share/codeblocks/plugins/libclasswizard.so
b4162000-b4170000 r-xp 00000000 03:02 121485     /usr/local/shaAbgebrochen


[Pulle]

I've done a bit more testing and recognized that this crash only occurs when C::B is build with the unicode-version of wxgtk. If I built it with the ansi-version the crash was gone. Maybe it's not a C::B error but a wxwidgets error but I didn't recognized it with any other wxwidgets-apps.

[sethjackson]

wxScintilla Unicode handling problem (just a guess)?

[stonedz]

Hello,

I have the exact same problem with the same configuration (Archlinux updated to current), It seems that our distro config may be the cause of this problem. Meanwhile, if someone get a clue about how to patch it it would be nice, it's annoying not being able to copy/paste (sic!) in an IDE...

Thanks.

[Pecan]

Hello,

I have the exact same problem with the same configuration (Archlinux updated to current), It seems that our distro config may be the cause of this problem. Meanwhile, if someone get a clue about how to patch it it would be nice, it's annoying not being able to copy/paste (sic!) in an IDE...

Thanks.

Turn off CodeCompletion and see if the problem goes away.

[eranif]

Hi,
Couple of months ago I encountered the same problem I posted this issue at wxCode forum, but unfortunaly I got no replies but one, but I did managed to find a solution for this
(it is, in my opinion wxScintilla bug)

the bug report and the solution can be found here:
http://wxforum.shadonet.com/viewtopic.php?t=9907

A quick solution is to replace the Paste function with this one: (ScintillWX.cpp):

Code Select Expand

void ScintillaWX::Paste() {
    pdoc->BeginUndoAction();
    ClearSelection();

#if wxUSE_DATAOBJ
    wxTextDataObject data;
    wxString textString;

    wxWX2MBbuf buf;
    int   len  = 0;
    bool  rectangular = false;

    if (wxTheClipboard->Open()) {
        wxTheClipboard->UsePrimarySelection(false);
        wxCustomDataObject selData(wxUSE_UNICODE ? wxDF_UNICODETEXT : wxDF_PRIVATE);
        bool gotRectData = wxTheClipboard->GetData(selData);

        if (gotRectData && selData.GetSize()>1) {
            const char* rectBuf = (const char*)selData.GetData();
            rectangular = rectBuf[0] == (char)1;
            len = selData.GetDataSize()-1;
            char* buffer = new char[len];
            memcpy (buffer, rectBuf+1, len);
            textString = sci2wx(buffer, len);
            delete buffer;
        } else {
            bool gotData = wxTheClipboard->GetData(data);
            if (gotData) {
                textString = wxTextBuffer::Translate (data.GetText(),
                                                      wxConvertEOLMode(pdoc->eolMode));
            }
        }
        data.SetText(wxEmptyString); // free the data object content
        wxTheClipboard->Close();
    }

    buf = (wxWX2MBbuf)wx2sci(textString);
    len  = strlen(buf);
    int newPos = 0;
    if (rectangular) {
        int newLine = pdoc->LineFromPosition (currentPos) + wxCountLines (buf, pdoc->eolMode);
        int newCol = pdoc->GetColumn(currentPos);
        PasteRectangular (currentPos, buf, len);
        newPos = pdoc->FindColumn (newLine, newCol);
    } else {
        pdoc->InsertString (currentPos, buf, len);
        newPos = currentPos + len;
    }
    SetEmptySelection (newPos);
#endif // wxUSE_DATAOBJ

    pdoc->EndUndoAction();
    NotifyChange();
    Redraw();
}
Eran

[manciuleas]

Eran,

Who is wxCountLines? It seems that it is not defined.

[stahta01]

Eran,

Who is wxCountLines? It seems that it is not defined.

From ScintillaWX.cxx right after the wxConvertEOLMode method; this is from code written after C::B version of it.

Code Select Expand


static int wxCountLines(const char* text, int scintillaMode)
{
    char eolchar;

    switch (scintillaMode) {
        case wxSCI_EOL_CRLF:
        case wxSCI_EOL_LF:
            eolchar = '\n';
            break;
        case wxSCI_EOL_CR:
            eolchar = '\r';
            break;
        default:
            return 0;
    }

    int count = 0;
    int i     = 0;
    while (text[i] != 0) {
        if (text[i] == eolchar) {
            count++;
        }
        i++;
    }

    return count;
}


[manciuleas]

Thanks stahta01.

[Pulle]

Hi,
thanks for the help Eran, but the bug is still there after changing ScintillaWX.cpp as you suggested and recompile C::B. So the error must be somewhere else.
btw: disabling code-completition didn't helped either.

[eranif]

This is wierd, since this function fixed the same problem for me. can you confirm that the wxUSE_UNICODE macro is set to 1?
Eran

[Pulle]

Yes, wxUSE_UNICODE is set to 1 in the setup.h.

[fleuba]

Hi,

just wanted to ask WHEN will this bug be fixed in the svn source tree ?
It has been reported for more than 2 month, it is critical, and though we see no sign of move on this topic.
Is someone working on a patch ? will it be applied to the svn source tree ? when ?
Please could you give some feedbacks, it would be nice  :?.

Thanks for this great IDE, it is for us who work on many plateform (windows, linux32, linux64, MacOS) a really great tool.

Fred

[Biplab]

This is bugging me too. I'm using C::B Revison 3593, OpenSUSE 10.2, wxGTK-2.6.3.1 and wx is compiled as Release-Dynamic-Unicode-Monolithic.

C::B crashes after using Ctrl+V or Edit>Paste.

[mandrav]

just wanted to ask WHEN will this bug be fixed in the svn source tree ?
It has been reported for more than 2 month, it is critical, and though we see no sign of move on this topic.
Is someone working on a patch ? will it be applied to the svn source tree ? when ?

When it is fixed.

For the curious, neither me nor any other core team member is able to reproduce this. This means that until a patch is contributed by someone else, there is little to be done.