Strange error which may have someth9ng to do with wxPdfDocument.

Steve Cookson Mon, 29 Sep 2014 06:25:30 -0700

Hi Ulriche,

I'm not sure if this error is yours or not, but I thought I'd bounce itoff you. I've copied the wxPerl list too.

I have a modification in wx 2.8.11 to display Bitmap Headers and footersin RichText which has been working for a number of years that I amtransferring to 3.0.1. After a number of crashes, I have stripped thechanges down to JUST the following in richtextprint.h (ie a declarationof 4 new variables, but they are never used by anything).


private:

    wxRichTextBuffer*           m_richTextBuffer;

// Set buffers for headers and footers (Both firstpage andcontinuation pages).

    wxRichTextBuffer*           m_firstpageHeaderBuffer;
    wxRichTextBuffer*           m_firstpageFooterBuffer;
    wxRichTextBuffer*           m_continuationHeaderBuffer;
    wxRichTextBuffer*           m_continuationFooterBuffer;

Which compiles without for both error in both 2.8.11 and 3.0.1, in2.8.11 I have implemented a whole area of functionality around bitmapheaders and footers. In 3.0.1, it compiles ok and then gives me aruntime error:

*** Error in `/usr/bin/perl': malloc(): memory corruption:0x0000000004e939f0 ***

Aborted (core dumped)

If I start gdb against the core dump I find:

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/perl -w /usr/local/bin/wxperl_demo.pl'.
Program terminated with signal SIGABRT, Aborted.

#0 0x00007fc1826f7bb9 in __GI_raise (sig=sig@entry=6) at../nptl/sysdeps/unix/sysv/linux/raise.c:56

56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.

As the message says, there is no file called raise.c on my machine.

A quick Google shows suggests that there are a number of multi-threadingissues when running wxGTK and X11 on multiprocessor systems.

The sort of fix that is suggested is to insert something like thefollowing code:


#include <X11/Xlib.h>

.
.
.


        XInitThreads();

in main();

As there is no main in wxPdfDocument.cpp, I put it in the create method,to no effect.

I can't guarantee that that PdfDoc is the culprit, but I'd value youropinion.


Any suggestions gratefully received.

(A valgrind trace follows).

Thanks

Steve.






$ valgrind perl /usr/local/bin/wxperl_demo.pl
==15605== Memcheck, a memory error detector
==15605== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.

==15605== Using Valgrind-3.10.0.SVN and LibVEX; rerun with -h forcopyright info

==15605== Command: perl /usr/local/bin/wxperl_demo.pl
==15605==
Subroutine new redefined at /usr/local/lib/perl/5.18.2/Wx/Timer.pm line 29.

Subroutine DESTROY redefined at /usr/local/lib/perl/5.18.2/Wx/Timer.pmline 40.Subroutine Start redefined at /usr/local/lib/perl/5.18.2/Wx/Timer.pmline 46.

==15605== Invalid write of size 8

==15605== at 0x1D00CFEC:wxRichTextPrintout::wxRichTextPrintout(wxString const&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1EC63648: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x6FAE0CC: wxPliEventCallback::Handler(wxEvent&)(e_cback.cpp:93)==15605== by 0x802882D:wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&,wxEvent&) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BB11:wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&,wxEvtHandler*, wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BE75:wxEvtHandler::SearchDynamicEventTable(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BEFD: wxEvtHandler::TryHereOnly(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF92: wxEvtHandler::ProcessEventLocally(wxEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BFF4: wxEvtHandler::ProcessEvent(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)

==15605==  Address 0x12feae18 is 8 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==
==15605== Invalid write of size 4

==15605== at 0x1D00CFF7:wxRichTextPrintout::wxRichTextPrintout(wxString const&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1EC63648: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==  Address 0x12feae20 is 16 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==
==15605== Invalid write of size 4

==15605== at 0x1D00D001:wxRichTextPrintout::wxRichTextPrintout(wxString const&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1EC63648: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==  Address 0x12feae24 is 20 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==
==15605== Invalid write of size 1

==15605== at 0x1D00D00B:wxRichTextPrintout::wxRichTextPrintout(wxString const&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1EC63648: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==  Address 0x12feae28 is not stack'd, malloc'd or (recently) free'd
==15605==
==15605== Invalid write of size 8

==15605== at 0x1D00D028:wxRichTextPrintout::wxRichTextPrintout(wxString const&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1EC63648: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==  Address 0x12feae10 is 0 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==
==15605== Invalid read of size 4

==15605== at 0x1D00D86B: wxRichTextPrintout::CalculateScaling(wxDC*,wxRect&, wxRect&, wxRect&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1D00E0CF: wxRichTextPrintout::OnPreparePrinting() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x7AEE9EB: wxPrintPreviewBase::RenderPageIntoDC(wxDC&,int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x1D3CBBB4:wxPdfPrintPreviewImpl::RenderPageIntoBitmap(wxBitmap&, int) (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x7AEF45A: wxPrintPreviewBase::RenderPage(int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA1BF: wxPrintPreviewBase::UpdatePageRendering() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA27C: wxPreviewCanvas::OnIdle(wxIdleEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x802882D:wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&,wxEvent&) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BB11:wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&,wxEvtHandler*, wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BBC2: wxEventHashTable::HandleEvent(wxEvent&,wxEvtHandler*) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF1C: wxEvtHandler::TryHereOnly(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF92: wxEvtHandler::ProcessEventLocally(wxEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)

==15605==  Address 0x12dd5670 is 16 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==
==15605== Invalid read of size 4

==15605== at 0x1D00D884: wxRichTextPrintout::CalculateScaling(wxDC*,wxRect&, wxRect&, wxRect&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1D00E0CF: wxRichTextPrintout::OnPreparePrinting() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x7AEE9EB: wxPrintPreviewBase::RenderPageIntoDC(wxDC&,int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x1D3CBBB4:wxPdfPrintPreviewImpl::RenderPageIntoBitmap(wxBitmap&, int) (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x7AEF45A: wxPrintPreviewBase::RenderPage(int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA1BF: wxPrintPreviewBase::UpdatePageRendering() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA27C: wxPreviewCanvas::OnIdle(wxIdleEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x802882D:wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&,wxEvent&) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BB11:wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&,wxEvtHandler*, wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BBC2: wxEventHashTable::HandleEvent(wxEvent&,wxEvtHandler*) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF1C: wxEvtHandler::TryHereOnly(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF92: wxEvtHandler::ProcessEventLocally(wxEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)

==15605==  Address 0x12dd5674 is 20 bytes after a block of size 560 alloc'd

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x1EC6363A: XS_Wx__RichTextPrintout_new(interpreter*,cv*) (RichText.c:19049)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E7A48F: Perl_call_sv (in /usr/lib/libperl.so.5.18.2)

==15605==

valgrind: m_mallocfree.c:277 (mk_plain_bszB): Assertion 'bszB != 0' failed.

valgrind: This is probably caused by your program erroneously writingpast the

end of a heap block and corrupting heap metadata.  If you fix any
invalid writes reported by Memcheck, this assertion failure will
probably go away.  Please try that before reporting this as a bug.

==15605==    at 0x38050BAC: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x38050D06: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x3805B36A: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x3805DB09: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x38021535: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x3802172B: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x380218F5: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x3809DC03: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)
==15605==    by 0x380AC87C: ??? (in /usr/lib/valgrind/memcheck-amd64-linux)

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable

==15605== at 0x4C2B0E0: operator new(unsigned long) (in/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)==15605== by 0x8514D4E: std::basic_string<wchar_t,std::char_traits<wchar_t>, std::allocator<wchar_t>>::_Rep::_S_create(unsigned long, unsigned long,std::allocator<wchar_t> const&) (in/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19)==15605== by 0x851593C: std::basic_string<wchar_t,std::char_traits<wchar_t>, std::allocator<wchar_t>>::_Rep::_M_clone(std::allocator<wchar_t> const&, unsigned long) (in/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19)==15605== by 0x85159E3: std::basic_string<wchar_t,std::char_traits<wchar_t>, std::allocator<wchar_t> >::reserve(unsignedlong) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19)==15605== by 0x8515D85: std::basic_string<wchar_t,std::char_traits<wchar_t>, std::allocator<wchar_t> >::append(unsignedlong, wchar_t) (in /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19)==15605== by 0x1D352EBD: wxPdfFontDataCore::ConvertCID2GID(wxStringconst&, wxPdfEncoding const*, wxPdfSortedArrayInt*, wxPdfChar2GlyphMap*)const (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1D352BB8: wxPdfFontDataCore::GetStringWidth(wxStringconst&, wxPdfEncoding const*, bool) const (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1D33940C: wxPdfDocument::DoGetStringWidth(wxStringconst&) (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1D33AA8E: wxPdfDocument::GetStringWidth(wxStringconst&) (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1D333BC5: wxPdfDCImpl::DoGetTextExtent(wxStringconst&, int*, int*, int*, int*, wxFont const*) const (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1D332A9C:wxPdfDCImpl::DoGetPartialTextExtents(wxString const&, wxArrayInt&) const(in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x1CFA0B00:wxRichTextPlainText::GetRangeSize(wxRichTextRange const&, wxSize&, int&,wxDC&, wxRichTextDrawingContext&, int, wxPoint const&, wxSize const&,wxArrayInt*) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1CF7EDF5:wxRichTextParagraph::GetRangeSize(wxRichTextRange const&, wxSize&, int&,wxDC&, wxRichTextDrawingContext&, int, wxPoint const&, wxSize const&,wxArrayInt*) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1CF9ECE4: wxRichTextParagraph::Layout(wxDC&,wxRichTextDrawingContext&, wxRect const&, wxRect const&, int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1CF833FE: wxRichTextObject::LayoutToBestSize(wxDC&,wxRichTextDrawingContext&, wxRichTextBuffer*, wxRichTextAttr const&,wxRichTextAttr const&, wxRect const&, wxRect const&, int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1CF839CD: wxRichTextParagraphLayoutBox::Layout(wxDC&,wxRichTextDrawingContext&, wxRect const&, wxRect const&, int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x1D00E140: wxRichTextPrintout::OnPreparePrinting() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_richtext-3.0.so.0.1.0)==15605== by 0x7AEE9EB: wxPrintPreviewBase::RenderPageIntoDC(wxDC&,int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x1D3CBBB4:wxPdfPrintPreviewImpl::RenderPageIntoBitmap(wxBitmap&, int) (in/usr/local/lib/perl/5.18.2/auto/Wx/PdfDocument/libwxcode_gtk2u_pdfdoc-3.0.so.0.0.0)==15605== by 0x7AEF45A: wxPrintPreviewBase::RenderPage(int) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA1BF: wxPrintPreviewBase::UpdatePageRendering() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7AEA27C: wxPreviewCanvas::OnIdle(wxIdleEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x802882D:wxAppConsoleBase::CallEventHandler(wxEvtHandler*, wxEventFunctor&,wxEvent&) const (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BB11:wxEvtHandler::ProcessEventIfMatchesId(wxEventTableEntryBase const&,wxEvtHandler*, wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BBC2: wxEventHashTable::HandleEvent(wxEvent&,wxEvtHandler*) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF1C: wxEvtHandler::TryHereOnly(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BF92: wxEvtHandler::ProcessEventLocally(wxEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x819BFF4: wxEvtHandler::ProcessEvent(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x7B68C7A:wxScrollHelperEvtHandler::ProcessEvent(wxEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x819BD86: wxEvtHandler::SafelyProcessEvent(wxEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x7B1CC1E: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7A0881E: wxFrame::SendIdleEvents(wxIdleEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7B1CC47: wxWindowBase::SendIdleEvents(wxIdleEvent&)(in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7A0881E: wxFrame::SendIdleEvents(wxIdleEvent&) (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7A3D40C: wxAppBase::ProcessIdle() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x799276D: wxApp::DoIdle() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x7992872: wxapp_idle_callback (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x9967CE4: g_main_context_dispatch (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x9968047: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x9968309: g_main_loop_run (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x8A9D446: gtk_main (in/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0.2400.23)==15605== by 0x79A5694: wxGUIEventLoop::DoRun() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_gtk2u_core-3.0.so.0.1.0)==15605== by 0x806ADDF: wxEventLoopBase::Run() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)==15605== by 0x802A90C: wxAppConsoleBase::MainLoop() (in/usr/local/lib/perl/5.18.2/Alien/wxWidgets/gtk_3_0_1_uni/lib/libwx_baseu-3.0.so.0.1.0)

==15605==    by 0x6EE3EC8: wxPliApp::MainLoop() (app.h:195)

==15605== by 0x6E96BB9: XS_Wx__App_MainLoop(interpreter*, cv*)(Wx.c:14559)

==15605==    by 0x4EF0865: Perl_pp_entersub (in /usr/lib/libperl.so.5.18.2)

==15605== by 0x4EE8E85: Perl_runops_standard (in/usr/lib/libperl.so.5.18.2)

==15605==    by 0x4E81843: perl_run (in /usr/lib/libperl.so.5.18.2)
==15605==    by 0x400DD8: main (in /usr/bin/perl)

Thread 2: status = VgTs_WaitSys
==15605==    at 0x52ADC6D: ??? (syscall-template.S:81)

==15605== by 0x9967FE3: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x9968309: g_main_loop_run (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0xB3B4E15: ??? (in/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.4000.0)==15605== by 0x998CF14: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)

==15605==    by 0x5A98181: start_thread (pthread_create.c:312)
==15605==    by 0x52BAFBC: clone (clone.S:111)

Thread 3: status = VgTs_WaitSys
==15605==    at 0x52ADC6D: ??? (syscall-template.S:81)

==15605== by 0x9967FE3: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x99680EB: g_main_context_iteration (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x9968128: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)==15605== by 0x998CF14: ??? (in/lib/x86_64-linux-gnu/libglib-2.0.so.0.4000.0)

==15605==    by 0x5A98181: start_thread (pthread_create.c:312)
==15605==    by 0x52BAFBC: clone (clone.S:111)


Note: see also the FAQ in the source distribution.
It contains workarounds to several common problems.
In particular, if Valgrind aborted or crashed after
identifying problems in your program, there's a good chance
that fixing those problems will prevent Valgrind aborting or
crashing, especially if it happened in m_mallocfree.c.

If that doesn't help, please report this bug to: www.valgrind.org

In the bug report, send all the above text, the valgrind
version, and what OS and version you are using.  Thanks.

Strange error which may have someth9ng to do with wxPdfDocument.

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