Problems with drawing text in 1.3.29

[Damian Dixon]

Thanks for the suggestions.

I've narrowed one of the issues down to WineEngGetGlyphOutline
in dlls/gdi32/freetype.c.

The pitch is 6640 and the height is 53003. This means that a buffer of
~335Mb has been allocated and then memset.

This is where the slow down is occurring (because of the memset). I suspect
the resultant crash is also because of this.

I would suggest that limits need to be placed on the maximum pitch and
height.


I do not however believe that this is the root cause just one of the
symptoms.



On 5 October 2011 18:37, Marcus Meissner <marcus at jet.franken.de> wrote:

> On Wed, Oct 05, 2011 at 04:53:18PM +0100, Damian Dixon wrote:
> > Hi,
> >
> > I was attempting to use Wine 1.3.29 (in OpenSUSE 11.4 x86) and because of
> > issues pulled the source from git last night and still have problems.
> >
> > I am having performance issues with DrawText (5 odd seconds to draw a
> simple
> > string) and the occasional X Error and crash.
> >
> > The X Error is consistent and is as follows:
> >
> > fixme:advapi:SetSecurityInfo stub
> > X Error of failed request:  BadLength (poly request too large or internal
> > Xlib length error)
> >   Major opcode of failed request:  151 (RENDER)
> >   Minor opcode of failed request:  17 (RenderCreateGlyphSet)
> >   Serial number of failed request:  41091
> >   Current serial number in output stream:  41571
> > Process of pid=0023 has terminated
> >
> >
> > The crash less consistent but is dependent upon the amount of text I
> attempt
> > to draw.
> >
> > The last version I know this worked in was 1.1.39.
> >
> > I've a few things to still try out before I attempt to create an RBT.
>
> To get a backtrace and be able to dump some datastructures, run with
>
> WINEDEBUG=+synchronous wine foo.exe
>
> This will bring it into the debugger once the condition happens.
>
> CIao, MArcus
>
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