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[ft-announce] FreeType 2.3.3 has been released

From: Werner LEMBERG
Subject: [ft-announce] FreeType 2.3.3 has been released
Date: Thu, 05 Apr 2007 05:10:36 +0200 (CEST)

FreeType 2.3.3 has been released.

It is available from


The latter site also holds older versions of the FreeType library.

See below  for the  relevant snippet  from the  CHANGES file; users of
version 2.3.2 should upgrade.




FreeType 2  is a software  font engine that  is designed to  be small,
efficient,  highly   customizable,  and  portable   while  capable  of
producing high-quality output (glyph images) of most vector and bitmap
font formats.

Note that  FreeType 2 is  a font service  and doesn't provide  APIs to
perform higher-level features, like text layout or graphics processing
(e.g.,  colored  text  rendering,  `hollowing',  etc.).   However,  it
greatly simplifies these tasks by providing a simple, easy to use, and
uniform interface to access the content of font files.

FreeType  2  is  released  under  two open-source  licenses:  our  own
BSD-like FreeType  License and the  GPL.  It can  thus be used  by any
kind of projects, be they proprietary or not.


CHANGES BETWEEN 2.3.3 and 2.3.2


    - Remove a serious regression in the TrueType bytecode interpreter
      that was introduced  in version 2.3.2.  Note that  this does not
      disable the improvements introduced to the intepreter in version
      2.3.2,  only some  ill cases  that occurred  with  certain fonts
      (though a few popular ones).

    - The auto-hinter now  ignores single-point contours for computing
      blue zones.   This bug  created `wavy' baselines  when rendering
      text  with  various  fonts  that  use these  contours  to  model
      mark-attach points  (these are points that  are never rasterized
      and are placed outside of the glyph's real outline).

    - The `rsb_delta'  and `lsb_delta' glyph  slot fields are  now set
      to 0 for mono-spaced fonts.  Otherwise code that uses them would
      essentially ruin the fixed-advance property.

    - Fix  CVE-2007-1351  which can  cause an  integer overflow  while
      parsing BDF  fonts, leading  to a potentially  exploitable  heap
      overflow condition.


    - Fixed compilation issues on some 64-bit platforms (see ChangeLog
      for details).

    - A new demo  program `ftdiff' has been added  to compare TrueType
      hinting, FreeType's auto  hinting, and rendering without hinting
      in three columns.

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