mirrors/freetype
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
7,717 Commits 75 Branches 120 Tags 32 MiB
C 93.3%
Makefile 2.1%
Python 1.8%
DIGITAL Command Language 0.8%
M4 0.6%
Other 1.3%
3f2ac7d890
Go to file
Tamir Duberstein 3f2ac7d890 * src/base/ftsystem.c (ft_ansi_stream_io): Avoid undefined behaviour. 
Also short-circuit on `offset` to avoid checking `count` a second time when
`ft_ansi_stream_io` is used for reading.

Per ISO/IEC 9899:

  If an argument to a function has an invalid value (such as a value outside
  the domain of the function, or a pointer outside the address space of the
  program, or a null pointer, or apointer to non-modifiable storage when the
  corresponding parameter is not const-qualified) or a type (after
  promotion) not expected by a function with variable number of arguments,
  the behavior is undefined.  If a function argument is described as being
  an array, the pointer actually passed to the function shall have a value
  such that all address computations and accesses to objects (that would be
  valid if the pointer did point to the first element of such an array) are
  in fact valid.

Per IEEE Std 1003.1:

  size_t fread(void *restrict ptr, size_t size, size_t nitems,
               FILE *restrict stream);

  The `fread` function shall read into the array pointed to by `ptr` up to
  `nitems` elements whose size is specified by `size` in bytes, from the
  stream pointed to by `stream`.

Since the first argument to `fread` is described as being an array, its
behavior is undefined when that argument is a null pointer.

Per the documentation on `ft_ansi_stream_io`:

  If `count' is zero (this is, the function is used for seeking), a non-zero
  return value indicates an error.

Thus the intent is clear, and the call to `fread` can be skipped, avoiding
undefined behaviour.
2023-02-25 05:20:57 +01:00
builds * builds/meson/parse_modules_cfg.py: Handle gxvalid and otvalid. 2023-02-09 21:49:34 +01:00
devel [truetype] Hide Infinality. 2023-02-17 04:22:24 +00:00
docs * Version 2.13 released. 2023-02-09 07:24:52 +01:00
include [truetype] Hide Infinality. 2023-02-17 04:22:24 +00:00
objs * builds/windows/vc2010/freetype.vcxproj: AfterBuild copy. 2017-12-16 22:00:40 -05:00
src * src/base/ftsystem.c (ft_ansi_stream_io): Avoid undefined behaviour. 2023-02-25 05:20:57 +01:00
subprojects * subprojects/harfbuzz.wrap, subprojects/libpng.wrap: Updated. 2023-01-30 17:16:34 +01:00
tests * tests/issue-1063/main.c: s/PATH_MAX/FILENAME_MAX/. 2021-10-20 11:27:03 -04:00
.clang-format Add .clang-format file 2020-07-16 15:51:06 +02:00
.gitignore [meson] Add first regression test to FreeType 2021-06-16 10:28:47 +02:00
.gitlab-ci.yml ci: bump windows image and use newer runner and vs2019 2022-08-06 11:52:32 +00:00
.gitmodules Move 'dlg' submodule to subprojects directory. 2021-02-16 14:07:18 +01:00
.mailmap .mailmap: Typo. 2022-01-24 07:57:20 +01:00
autogen.sh Update all copyright notices. 2023-01-17 09:18:25 +01:00
CMakeLists.txt * Version 2.13 released. 2023-02-09 07:24:52 +01:00
configure Update all copyright notices. 2023-01-17 09:18:25 +01:00
LICENSE.TXT [autofit] Don't depend on 'hb-ft'. 2023-01-06 12:54:17 +01:00
Makefile Update all copyright notices. 2023-01-17 09:18:25 +01:00
meson_options.txt Update all copyright notices. 2023-01-17 09:18:25 +01:00
meson.build Update all copyright notices. 2023-01-17 09:18:25 +01:00
modules.cfg Update all copyright notices. 2023-01-17 09:18:25 +01:00
README * Version 2.13 released. 2023-02-09 07:24:52 +01:00
README.git Update all copyright notices. 2023-01-17 09:18:25 +01:00
vms_make.com Update all copyright notices. 2023-01-17 09:18:25 +01:00

README 

FreeType 2.13.0
===============

Homepage: https://www.freetype.org

FreeType is a freely available software library to render fonts.

It  is  written  in  C,   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.

Please   read  the   `docs/CHANGES`   file,   it  contains   IMPORTANT
INFORMATION.

Read the files `docs/INSTALL*`  for installation instructions; see the
file `docs/LICENSE.TXT` for the available licenses.

For using FreeType's git repository  instead of a distribution bundle,
please read file  `README.git`.  Note that you have  to actually clone
the repository; using a snapshot will  not work (in other words, don't
use gitlab's 'Download' button).

The FreeType 2 API reference is located in directory `docs/reference`;
use the file  `index.html` as the top entry point.   [Please note that
currently  the search  function  for  locally installed  documentation
doesn't work due to cross-site scripting issues.]

Additional documentation is  available as a separate  package from our
sites.  Go to

  https://download.savannah.gnu.org/releases/freetype/

and download one of the following files.

  freetype-doc-2.13.0.tar.xz
  freetype-doc-2.13.0.tar.gz
  ftdoc2130.zip

To view the documentation online, go to

  https://www.freetype.org/freetype2/docs/


Mailing Lists
-------------

The preferred  way of  communication with the  FreeType team  is using
e-mail lists.

  general use and discussion:      freetype@nongnu.org
  engine internals, porting, etc.: freetype-devel@nongnu.org
  announcements:                   freetype-announce@nongnu.org
  git repository tracker:          freetype-commit@nongnu.org

The lists are moderated; see

  https://www.freetype.org/contact.html

how to subscribe.


Bugs
----

Please submit bug reports at

  https://gitlab.freedesktop.org/freetype/freetype/-/issues

Alternatively,    you    might    report    bugs    by    e-mail    to
`freetype-devel@nongnu.org`.    Don't  forget   to  send   a  detailed
explanation of the problem -- there  is nothing worse than receiving a
terse message that only says 'it doesn't work'.


Patches
-------

For larger changes please provide merge requests at

  https://gitlab.freedesktop.org/freetype/freetype/-/merge_requests

Alternatively, you can send patches to the `freetype-devel@nongnu.org`
mailing list  -- and thank you  in advance for your  work on improving
FreeType!

Details on the process can be found here:

  https://www.freetype.org/developer.html#patches


Enjoy!

  The FreeType Team

----------------------------------------------------------------------

Copyright (C) 2006-2023 by
David Turner, Robert Wilhelm, and Werner Lemberg.

This  file is  part of  the FreeType  project, and  may only  be used,
modified,  and distributed  under the  terms of  the  FreeType project
license,  LICENSE.TXT.  By  continuing to  use, modify,  or distribute
this file you  indicate that you have read  the license and understand
and accept it fully.


--- end of README ---