Re: [ft-devel] FT_New_Memory_Face crashes

[Chris Morgan]

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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