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cache: Check higher bits in flags for non ILP32 systems.

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This commit is contained in:
suzuki toshiya 2009-08-01 00:32:24 +09:00
parent 61adbe980a
commit 5d3ff05615
2 changed files with 52 additions and 4 deletions
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22
ChangeLog
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@ -1,3 +1,25 @@
2009-07-31 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
cache: Check higher bits in flags for non ILP32 systems.
4 public functions ought to take FT_ULong flags, but take
FT_UInt flags. To keep binary compatibility, we drop higher
bits on non ILP32 platforms,
ILP64 systems: No drop occurs.
LP64 systems: Higher bits are not used.
16-bit systems: Drop can occur.
See
http://lists.gnu.org/archive/html/freetype-devel/2008-12/msg00065.html
These functions will be refined to take FT_ULong flags in
next bump with incompatible API change.
* src/cache/ftcbasic.c (FTC_ImageCache_Lookup):
Check `flags' in `type', the 2nd argument.
(FTC_SBitCache_Lookup): Ditto.
(FTC_ImageCache_LookupScaler): Check `load_flags',
the 3rd argument.
(FTC_SBitCache_LookupScaler): Ditto.
2009-07-31 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
sfnt: Ignore invalid GIDs in glyph name lookup.

34
src/cache/ftcbasic.c vendored
View File

@ -349,10 +349,16 @@
#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
{
if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
{
FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
}
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.load_flags = type->flags;
query.attrs.load_flags = (FT_UInt)type->flags;
}
query.attrs.scaler.pixel = 1;
@ -418,8 +424,15 @@
if ( anode )
*anode = NULL;
/* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
if ( load_flags > FT_UINT_MAX )
{
FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
}
query.attrs.scaler = scaler[0];
query.attrs.load_flags = load_flags;
query.attrs.load_flags = (FT_UInt)load_flags;
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) + gindex;
@ -671,10 +684,16 @@
#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
{
if ( (FT_ULong)(type->flags - FT_INT_MIN) > FT_UINT_MAX )
{
FT_TRACE1(( "FTC_ImageCache_Lookup: higher bits in load_flags" ));
FT_TRACE1(( "0x%x are dropped\n", (type->flags & ~((FT_ULong)FT_UINT_MAX)) ));
}
query.attrs.scaler.face_id = type->face_id;
query.attrs.scaler.width = type->width;
query.attrs.scaler.height = type->height;
query.attrs.load_flags = type->flags;
query.attrs.load_flags = (FT_UInt)type->flags;
}
query.attrs.scaler.pixel = 1;
@ -741,8 +760,15 @@
*ansbit = NULL;
/* FT_Load_Glyph(), FT_Load_Char() take FT_UInt flags */
if ( load_flags > FT_UINT_MAX )
{
FT_TRACE1(( "FTC_ImageCache_LookupScaler: higher bits in load_flags" ));
FT_TRACE1(( "0x%x are dropped\n", (load_flags & ~((FT_ULong)FT_UINT_MAX)) ));
}
query.attrs.scaler = scaler[0];
query.attrs.load_flags = load_flags;
query.attrs.load_flags = (FT_UInt)load_flags;
/* beware, the hash must be the same for all glyph ranges! */
hash = FTC_BASIC_ATTR_HASH( &query.attrs ) +