-
Show log
Commit
-
Hash : fbe2fe4c
Author :
Date : 2017-05-29T13:29:28
Handle some integer overflow run-time errors (#46149, #48979). This commit (mainly for 32bit CPUs) is the first of a series of similar commits to handle known integer overflows. Basically, all of them are harmless, since they affect rendering of glyphs only, not posing security threats. It is expected that fuzzying will show up more overflows, to be fixed in due course. The idea is to mark places where overflows can occur, using macros that simply cast to unsigned integers, because overflow arithmetic is well defined in this case. Doing so suppresses run-time errors of sanitizers without adding computational overhead. * include/freetype/internal/ftcalc.h (OVERFLOW_ADD_INT, OVERFLOW_SUB_INT, OVERFLOW_MUL_INT, OVERFLOW_ADD_LONG, OVERFLOW_SUB_LONG, OVERFLOW_MUL_LONG): New macros. * src/base/ftcalc.c (FT_RoundFix, FT_CeilFix, FT_Matrix_Multiply, FT_Matrix_Multiply_Scaled, FT_Vector_Transform_Scaled, ft_corner_orientation): Use new macros. * src/base/ftoutln.c (FT_Outline_Get_Orientation): Use new macros.
-
README
-
FreeType 2.8 ============ Homepage: http://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. The FreeType 2 API reference is located in `docs/reference'; use the file `ft2-toc.html' as the top entry point. Additional documentation is available as a separate package from our sites. Go to http://download.savannah.gnu.org/releases/freetype/ and download one of the following files. freetype-doc-2.8.tar.bz2 freetype-doc-2.8.tar.gz ftdoc28.zip To view the documentation online, go to http://www.freetype.org/freetype2/documentation.html 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 http://www.freetype.org/contact.html how to subscribe. Bugs ==== Please submit bug reports at https://savannah.nongnu.org/bugs/?group=freetype 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'. Enjoy! The FreeType Team ---------------------------------------------------------------------- Copyright 2006-2017 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 ---