RE: [Devel] bug in 2.1.7

[Turner David]

Hello,

Hi,

 

I just downloaded the 2.1.7 version from your site, and in base\ftobjs.c there is a bug that was introduced in ft_input_stream_new (the last version we used was 2.04).  If the user passes in his own stream and memory allocation functions (FT_OPEN_STREAM set), then the following line near the end of the function is incorrect:

 

stream->memory = memory;  /* just to be certain */

 

This line overwrites the client's memory object, which prevents the client from getting alloc & free callbacks, and causes a leak because the client's memory pointer is lost here.

 

This is not a bug, the memory allocator used by the stream must be the same than the

one used by the library itself. This is a design feature and won't change.

 

If you want to use a custom allocator, you shouldn't use FT_Init_FreeType, instead,

use something like the following:

 

#include FT_MODULE_H

 

... create FT_Memory instance, accessed with the "my_memory" pointer

 

// create new library object, this ones doesn't have any modules registered

error = FT_Library_New( my_memory, &library );

if (error) ....

 

// register all "static modules", determined by "ftmodule.h" configuration

FT_Add_Default_Modules( library );

 

Hope this helps,

 

- David Turner

- The FreeType Project  (www.freetype.org)

 

 

Best regards,

 

Neil Peterson (address@hiddendesign.com)

Open Design Alliance

 

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