Re: [ft-devel] FT_New_Memory_Face crashes

[Louis Desjardins]

Thanks Chris. The freetype source I used for the linux example is the same, I simply had to change the way I logged outputs, and had to generate a different Makefile.
The main difference between the standalone and Android app is the way that the input TTF file is read in, however I verified that my TTF file is read in correctly in Android, by writing out the buffer that I read in to a new file, and then comparing the original with this - they are identical. Note that I am also on a Windows machine so I have built my standalone app using Cygwin.

> From: address@hidden
> Date: Wed, 7 Sep 2011 21:07:08 -0400
> Subject: Re: [ft-devel] FT_New_Memory_Face crashes
> To: address@hidden
> CC: address@hidden
>
> On the contrary, now you have a baseline / comparison case and a
> useful test point.
>
> Have you modified your Android example such that it more closely
> matches the Linux app example? I'm wondering how different they might
> be as those differences may point to different behavior.
>
> Are you using the same source code to generate the freetype libraries
> for instance or at least the same version of the library?
>
> Chris
>
>
>
> On Wed, Sep 7, 2011 at 8:49 PM, Louis Desjardins
> <address@hidden> wrote:
> > I have managed to create a standalone linux app that builds using the same
> > freetype library files and should reproduce the error, however in this case,
> > FT_New_Memory_Face succeeds, but in the Android it fails (despite my checks
> > that the input file integrity and size is maintained.) So unfortunately my
> > standalone app will not be useful afterall.
> >
> > ________________________________
> > From: address@hidden
> > To: address@hidden
> > CC: address@hidden
> > Subject: RE: [ft-devel] FT_New_Memory_Face crashes
> > Date: Wed, 7 Sep 2011 12:02:19 -0700
> >
> > Thanks for your reply. I am still trying to get a successful Makefile going
> > so I have not been able to test this standalone app yet, however in case it
> > helps, I have attached the code that should provide the crash in the
> > meanwhile. The main program is in Standalone.cpp and crashes within
> > FT_New_Memory_Face. I have also provided a sample ttf and the freetype
> > library that I am using with Android (though I have added various 'printfs'
> > for debugging).
> >
> > Thank-you
> > ________________________________
> > From: address@hidden
> > Date: Wed, 7 Sep 2011 13:06:36 -0400
> > Subject: Re: [ft-devel] FT_New_Memory_Face crashes
> > To: address@hidden
> > CC: address@hidden
> >
> > It should be possible to create a self standing example that will compile on
> > a Linux box. It might not have to be fully equivalent as long as it fails in
> > the same way and aids in debugging
> > Chris
> >
> > On Sep 7, 2011, at 12:23 PM, Louis Desjardins <address@hidden>
> > wrote:
> >
> > I apologize, I made a copy\paste error when providing the sample, I have
> > corrected it below as they are in fact the same buffers in the code I'm
> > running.
> >
> > Unfortunately I cannot provide a complete standalone sample as I am working
> > in the Android NDK.
> > LD
> > ________________________________
> > From: address@hidden
> > To: address@hidden
> > Date: Wed, 7 Sep 2011 03:47:26 -0400
> > Subject: RE: [ft-devel] FT_New_Memory_Face crashes
> >
> > In the code sample, FT_NEW_MEMORY_Face() is passed a different buffer from
> > the one created by LoadFile().
> >
> >
> >
> > ________________________________
> >
> > From: address@hidden
> > [mailto:address@hidden On Behalf Of
> > Louis Desjardins
> > Sent: 07 September 2011 00:13
> > To: address@hidden
> > Subject: [ft-devel] FT_New_Memory_Face crashes
> >
> >
> >
> > I have loaded an "arial.ttf" file (taken from my /Windows/Fonts folder) into
> > memory, however passing this into FT_New_Memory_Face crashes (I have also
> > tried other ttf files, and this function still crashes). Any clues as to
> > what I might be doing wrong? Note that I am using Freetype with the Android
> > NDK, so it is difficult to debug, however I find that eventually, the crash
> > occurs within:
> >
> > FT_New_Memory_Face -> FT_Open_Face -> FT_Stream_ReadLong -> crashes at:
> >
> > if ( p )
> >
> > {
> >
> >        result = FT_NEXT_LONG( p ); //crashes here, in file ftstream.c,
> > method FT_Stream_ReadLong
> >
> > }
> >
> > And below is my code:
> >
> > unsigned char *fontBuffer = LoadFile("arial.ttf");
> >
> > zip_uint64_t fSize = GetFileSize("arial.ttf"); // I checked this, and it
> > returns the correct size
> >
> > FT_Library  library;
> >
> > FT_Face     face;
> >
> > int error = FT_Init_FreeType( &library ); // I checked this, this step
> > succeeds
> >
> > if( error != 0 )
> >
> >     printf("FT_Init_FreeType failed");
> >
> >
> >
> > error = FT_New_Memory_Face( library,
> >
> >                             (FT_Byte*)fontBuffer,
> >
> >                             fSize,
> >
> >                             0,
> >
> >                             &face );
> >
> > _______________________________________________
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> >
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> >
> >