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| author | Chris Liddell <chris.liddell@artifex.com> | 2018-04-03 15:49:48 +0100 |
|---|---|---|
| committer | Chris Liddell <chris.liddell@artifex.com> | 2018-05-18 13:17:15 +0100 |
| commit | 9cb169b6b260f650aac2c3c7ed7af0f345ee0707 (patch) | |
| tree | 9b4d2ee77a0dbe43cb0364da2444686ed7302646 /freetype/src/otvalid/otvcommn.h | |
| parent | ddace435eb99ea1c8a517f4ec94307cfe0743bce (diff) | |
| download | ghostpdl-9cb169b6b260f650aac2c3c7ed7af0f345ee0707.tar.gz | |
Work around a behaviour change in freetype > 2.8
Freetype will throw an error when we try to retrieve the glyph if the x/y
advance values are too big to fit in a 16.16 fixed point value.
Since we have no need of those values, set them to zero, and avoid the error.
Bring freetype up to 2.9.1
Plus the gs makefile changes to support the new version.
Reapply "Work around a change in the zlib API for 1.2.11"
for Freetype
commit: 08482c582115a1396d0fd9186011008f889a61c5
Diffstat (limited to 'freetype/src/otvalid/otvcommn.h')
| -rw-r--r-- | freetype/src/otvalid/otvcommn.h | 54 |
1 files changed, 42 insertions, 12 deletions
diff --git a/freetype/src/otvalid/otvcommn.h b/freetype/src/otvalid/otvcommn.h index 44e0c6379..a392784cf 100644 --- a/freetype/src/otvalid/otvcommn.h +++ b/freetype/src/otvalid/otvcommn.h @@ -4,7 +4,7 @@ /* */ /* OpenType common tables validation (specification). */ /* */ -/* Copyright 2004-2016 by */ +/* Copyright 2004-2018 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -67,29 +67,38 @@ FT_BEGIN_HEADER #undef FT_INVALID_ -#define FT_INVALID_( _error ) \ +#define FT_INVALID_( _error ) \ ft_validator_error( otvalid->root, FT_THROW( _error ) ) #define OTV_OPTIONAL_TABLE( _table ) FT_UShort _table; \ FT_Bytes _table ## _p +#define OTV_OPTIONAL_TABLE32( _table ) FT_ULong _table; \ + FT_Bytes _table ## _p + #define OTV_OPTIONAL_OFFSET( _offset ) \ FT_BEGIN_STMNT \ _offset ## _p = p; \ _offset = FT_NEXT_USHORT( p ); \ FT_END_STMNT -#define OTV_LIMIT_CHECK( _count ) \ - FT_BEGIN_STMNT \ +#define OTV_OPTIONAL_OFFSET32( _offset ) \ + FT_BEGIN_STMNT \ + _offset ## _p = p; \ + _offset = FT_NEXT_ULONG( p ); \ + FT_END_STMNT + +#define OTV_LIMIT_CHECK( _count ) \ + FT_BEGIN_STMNT \ if ( p + (_count) > otvalid->root->limit ) \ - FT_INVALID_TOO_SHORT; \ + FT_INVALID_TOO_SHORT; \ FT_END_STMNT #define OTV_SIZE_CHECK( _size ) \ FT_BEGIN_STMNT \ if ( _size > 0 && _size < table_size ) \ { \ - if ( otvalid->root->level == FT_VALIDATE_PARANOID ) \ + if ( otvalid->root->level == FT_VALIDATE_PARANOID ) \ FT_INVALID_OFFSET; \ else \ { \ @@ -102,12 +111,33 @@ FT_BEGIN_HEADER " set to zero.\n" \ "\n", #_size )); \ \ - /* always assume 16bit entities */ \ _size = pp[0] = pp[1] = 0; \ } \ } \ FT_END_STMNT +#define OTV_SIZE_CHECK32( _size ) \ + FT_BEGIN_STMNT \ + if ( _size > 0 && _size < table_size ) \ + { \ + if ( otvalid->root->level == FT_VALIDATE_PARANOID ) \ + FT_INVALID_OFFSET; \ + else \ + { \ + /* strip off `const' */ \ + FT_Byte* pp = (FT_Byte*)_size ## _p; \ + \ + \ + FT_TRACE3(( "\n" \ + "Invalid offset to optional table `%s'" \ + " set to zero.\n" \ + "\n", #_size )); \ + \ + _size = pp[0] = pp[1] = pp[2] = pp[3] = 0; \ + } \ + } \ + FT_END_STMNT + #define OTV_NAME_(x) #x #define OTV_NAME(x) OTV_NAME_(x) @@ -146,11 +176,11 @@ FT_BEGIN_HEADER #define OTV_INIT otvalid->debug_indent = 0 -#define OTV_ENTER \ - FT_BEGIN_STMNT \ - otvalid->debug_indent += 2; \ - FT_TRACE4(( "%*.s", otvalid->debug_indent, 0 )); \ - FT_TRACE4(( "%s table\n", \ +#define OTV_ENTER \ + FT_BEGIN_STMNT \ + otvalid->debug_indent += 2; \ + FT_TRACE4(( "%*.s", otvalid->debug_indent, 0 )); \ + FT_TRACE4(( "%s table\n", \ otvalid->debug_function_name[otvalid->nesting_level] )); \ FT_END_STMNT |