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Fix handing of `FT_Bool'. 

Before this commit we had code like

  (FT_Bool)( globals->glyph_styles[gindex] & 0x8000)

Since `FT_Bool' is defined to be an `unsigned char', the code
evaluated to something like

  (unsigned char)( 0x8532 & 0x8000)

which in turn expanded to

  (unsigned char)( 0x8000)

and finally yielded 0x00 – i.e., false – not as expected.

Problem reported and analyzed by Tony Smith <tony.smith@macro4.com>.

* include/freetype/fttypes.h (FT_BOOL): Add a comparison against
zero so that we always have a Boolean expression.

*/*: Replace castings to `FT_Bool' with calls to `FT_BOOL' where
possible.
This commit is contained in:
Werner Lemberg 2018-09-25 09:10:09 +02:00
parent 0f122fef34
commit a9af691481
19 changed files with 73 additions and 50 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
ChangeLog
View File

@ -1,3 +1,30 @@
2018-09-25 Werner Lemberg <wl@gnu.org>
Fix handing of `FT_Bool'.
Before this commit we had code like
(FT_Bool)( globals->glyph_styles[gindex] & 0x8000)
Since `FT_Bool' is defined to be an `unsigned char', the code
evaluated to something like
(unsigned char)( 0x8532 & 0x8000)
which in turn expanded to
(unsigned char)( 0x8000)
and finally yielded 0x00 – i.e., false – not as expected.
Problem reported and analyzed by Tony Smith <tony.smith@macro4.com>.
* include/freetype/fttypes.h (FT_BOOL): Add a comparison against
zero so that we always have a Boolean expression.
*/*: Replace castings to `FT_Bool' with calls to `FT_BOOL' where
possible.
2018-09-23 Alexei Podtelezhnikov <apodtele@gmail.com>
[bdf] Speed up charmap access.

2
include/freetype/fttypes.h
View File

@ -588,7 +588,7 @@ FT_BEGIN_HEADER
#define FT_IS_EMPTY( list ) ( (list).head == 0 )
#define FT_BOOL( x ) ( (FT_Bool)( x ) )
#define FT_BOOL( x ) ( (FT_Bool)( (x) != 0 ) )
/* concatenate C tokens */
#define FT_ERR_XCAT( x, y ) x ## y

2
src/autofit/afcjk.c
View File

@ -1198,7 +1198,7 @@
/* check for links -- if seg->serif is set, then seg->link must */
/* be ignored */
is_serif = (FT_Bool)( seg->serif && seg->serif->edge != edge );
is_serif = FT_BOOL( seg->serif && seg->serif->edge != edge );
if ( seg->link || is_serif )
{

4
src/autofit/afglobal.c
View File

@ -489,9 +489,9 @@
FT_UInt gindex )
{
if ( gindex < (FT_ULong)globals->glyph_count )
return (FT_Bool)( globals->glyph_styles[gindex] & AF_DIGIT );
return FT_BOOL( globals->glyph_styles[gindex] & AF_DIGIT );
return (FT_Bool)0;
return FT_BOOL( 0 );
}

2
src/autofit/afhints.c
View File

@ -549,7 +549,7 @@
*offset = ( dim == AF_DIMENSION_HORZ ) ? seg->first->fx
: seg->first->fy;
if ( seg->edge )
*is_blue = (FT_Bool)( seg->edge->blue_edge != 0 );
*is_blue = FT_BOOL( seg->edge->blue_edge );
else
*is_blue = FALSE;

8
src/autofit/aflatin.c
View File

@ -1307,7 +1307,7 @@
/* an extra-light axis corresponds to a standard width that is */
/* smaller than 5/8 pixels */
axis->extra_light =
(FT_Bool)( FT_MulFix( axis->standard_width, scale ) < 32 + 8 );
FT_BOOL( FT_MulFix( axis->standard_width, scale ) < 32 + 8 );
#ifdef FT_DEBUG_LEVEL_TRACE
if ( axis->extra_light )
@ -2328,9 +2328,9 @@
/* check for links -- if seg->serif is set, then seg->link must */
/* be ignored */
is_serif = (FT_Bool)( seg->serif &&
seg->serif->edge &&
seg->serif->edge != edge );
is_serif = FT_BOOL( seg->serif &&
seg->serif->edge &&
seg->serif->edge != edge );
if ( ( seg->link && seg->link->edge ) || is_serif )
{

8
src/autofit/aflatin2.c
View File

@ -632,7 +632,7 @@
/* an extra-light axis corresponds to a standard width that is */
/* smaller than 5/8 pixels */
axis->extra_light =
(FT_Bool)( FT_MulFix( axis->standard_width, scale ) < 32 + 8 );
FT_BOOL( FT_MulFix( axis->standard_width, scale ) < 32 + 8 );
if ( dim == AF_DIMENSION_VERT )
{
@ -1302,9 +1302,9 @@
/* check for links -- if seg->serif is set, then seg->link must */
/* be ignored */
is_serif = (FT_Bool)( seg->serif &&
seg->serif->edge &&
seg->serif->edge != edge );
is_serif = FT_BOOL( seg->serif &&
seg->serif->edge &&
seg->serif->edge != edge );
if ( ( seg->link && seg->link->edge ) || is_serif )
{

13
src/base/ftobjs.c
View File

@ -962,8 +962,9 @@
#ifdef GRID_FIT_METRICS
if ( !( load_flags & FT_LOAD_NO_HINTING ) )
ft_glyphslot_grid_fit_metrics( slot,
FT_BOOL( load_flags & FT_LOAD_VERTICAL_LAYOUT ) );
ft_glyphslot_grid_fit_metrics(
slot,
FT_BOOL( load_flags & FT_LOAD_VERTICAL_LAYOUT ) );
#endif
}
}
@ -2736,8 +2737,8 @@
/* close the attached stream */
FT_Stream_Free( stream,
(FT_Bool)( parameters->stream &&
( parameters->flags & FT_OPEN_STREAM ) ) );
FT_BOOL( parameters->stream &&
( parameters->flags & FT_OPEN_STREAM ) ) );
Exit:
return error;
@ -5154,9 +5155,9 @@
service = (FT_Service_Properties)interface;
if ( set )
missing_func = (FT_Bool)( !service->set_property );
missing_func = FT_BOOL( !service->set_property );
else
missing_func = (FT_Bool)( !service->get_property );
missing_func = FT_BOOL( !service->get_property );
if ( missing_func )
{

2
src/cff/cffgload.c
View File

@ -414,7 +414,7 @@
decoder.width_only = TRUE;
decoder.builder.no_recurse =
(FT_Bool)( load_flags & FT_LOAD_NO_RECURSE );
FT_BOOL( load_flags & FT_LOAD_NO_RECURSE );
/* now load the unscaled outline */
error = cff_get_glyph_data( face, glyph_index,

3
src/cid/cidgload.c
View File

@ -393,8 +393,7 @@
must_finish_decoder = TRUE;
/* set up the decoder */
decoder.builder.no_recurse = FT_BOOL(
( ( load_flags & FT_LOAD_NO_RECURSE ) != 0 ) );
decoder.builder.no_recurse = FT_BOOL( load_flags & FT_LOAD_NO_RECURSE );
error = cid_load_glyph( &decoder, glyph_index );
if ( error )

4
src/pfr/pfrobjs.c
View File

@ -122,7 +122,7 @@
stream,
(FT_UInt)( face_index & 0xFFFF ),
face->header.log_dir_offset,
FT_BOOL( face->header.phy_font_max_size_high != 0 ) );
FT_BOOL( face->header.phy_font_max_size_high ) );
if ( error )
goto Exit;
@ -370,7 +370,7 @@
FT_Bool scaling;
scaling = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 );
scaling = FT_BOOL( !( load_flags & FT_LOAD_NO_SCALE ) );
/* copy outline data */
*outline = slot->glyph.loader->base.outline;

4
src/psaux/cffdecode.c
View File

@ -1568,7 +1568,7 @@
x = ADD_LONG( x, args[0] );
y = ADD_LONG( y, args[1] );
cff_builder_add_point( builder, x, y,
(FT_Bool)( count == 3 ) );
FT_BOOL( count == 3 ) );
args += 2;
}
@ -1606,7 +1606,7 @@
x = ADD_LONG( x, args[0] );
y = ADD_LONG( y, args[1] );
cff_builder_add_point( builder, x, y,
(FT_Bool)( count == 4 || count == 1 ) );
FT_BOOL( count == 4 || count == 1 ) );
args += 2;
}

4
src/psaux/psfont.c
View File

@ -331,7 +331,7 @@
}
/* copy hinted flag on each call */
font->hinted = (FT_Bool)( font->renderingFlags & CF2_FlagsHinted );
font->hinted = FT_BOOL( font->renderingFlags & CF2_FlagsHinted );
/* determine if transform has changed; */
/* include Fontmatrix but ignore translation */
@ -366,7 +366,7 @@
if ( font->stemDarkened != ( font->renderingFlags & CF2_FlagsDarkened ) )
{
font->stemDarkened =
(FT_Bool)( font->renderingFlags & CF2_FlagsDarkened );
FT_BOOL( font->renderingFlags & CF2_FlagsDarkened );
/* blue zones depend on darkened flag */
needExtraSetup = TRUE;

19
src/psaux/pshints.c
View File

@ -217,52 +217,49 @@
FT_LOCAL_DEF( FT_Bool )
cf2_hint_isValid( const CF2_Hint hint )
{
return (FT_Bool)( hint->flags != 0 );
return FT_BOOL( hint->flags );
}
static FT_Bool
cf2_hint_isPair( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags &
( CF2_PairBottom | CF2_PairTop ) ) != 0 );
return FT_BOOL( hint->flags & ( CF2_PairBottom | CF2_PairTop ) );
}
static FT_Bool
cf2_hint_isPairTop( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags & CF2_PairTop ) != 0 );
return FT_BOOL( hint->flags & CF2_PairTop );
}
FT_LOCAL_DEF( FT_Bool )
cf2_hint_isTop( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags &
( CF2_PairTop | CF2_GhostTop ) ) != 0 );
return FT_BOOL( hint->flags & ( CF2_PairTop | CF2_GhostTop ) );
}
FT_LOCAL_DEF( FT_Bool )
cf2_hint_isBottom( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags &
( CF2_PairBottom | CF2_GhostBottom ) ) != 0 );
return FT_BOOL( hint->flags & ( CF2_PairBottom | CF2_GhostBottom ) );
}
static FT_Bool
cf2_hint_isLocked( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags & CF2_Locked ) != 0 );
return FT_BOOL( hint->flags & CF2_Locked );
}
static FT_Bool
cf2_hint_isSynthetic( const CF2_Hint hint )
{
return (FT_Bool)( ( hint->flags & CF2_Synthetic ) != 0 );
return FT_BOOL( hint->flags & CF2_Synthetic );
}
@ -497,7 +494,7 @@
{
move = moveDown;
/* true if non-optimum move */
saveEdge = (FT_Bool)( moveUp < -moveDown );
saveEdge = FT_BOOL( moveUp < -moveDown );
}
else
{

4
src/psaux/psintrp.c
View File

@ -287,7 +287,7 @@
{
CF2_UInt i;
CF2_UInt count = cf2_stack_count( opStack );
FT_Bool hasWidthArg = (FT_Bool)( count & 1 );
FT_Bool hasWidthArg = FT_BOOL( count & 1 );
/* variable accumulates delta values from operand stack */
CF2_Fixed position = hintOffset;
@ -364,7 +364,7 @@
if ( doConditionalLastRead )
{
FT_Bool lastIsX = (FT_Bool)(
FT_Bool lastIsX = FT_BOOL(
cf2_fixedAbs( SUB_INT32( vals[10], *curX ) ) >
cf2_fixedAbs( SUB_INT32( vals[11], *curY ) ) );
CF2_Fixed lastVal = cf2_stack_getReal( opStack, idx );

2
src/psaux/psread.c
View File

@ -105,7 +105,7 @@
FT_LOCAL_DEF( FT_Bool )
cf2_buf_isEnd( CF2_Buffer buf )
{
return (FT_Bool)( buf->ptr >= buf->end );
return FT_BOOL( buf->ptr >= buf->end );
}

2
src/truetype/ttgload.c
View File

@ -1479,7 +1479,7 @@
}
#endif
use_aw_2 = (FT_Bool)( subpixel_hinting && grayscale );
use_aw_2 = FT_BOOL( subpixel_hinting && grayscale );
loader->pp1.x = loader->bbox.xMin - loader->left_bearing;
loader->pp1.y = 0;

11
src/type1/t1gload.c
View File

@ -402,9 +402,9 @@
t1glyph->outline.n_points = 0;
t1glyph->outline.n_contours = 0;
hinting = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 &&
( load_flags & FT_LOAD_NO_HINTING ) == 0 );
scaled = FT_BOOL( ( load_flags & FT_LOAD_NO_SCALE ) == 0 );
hinting = FT_BOOL( !( load_flags & FT_LOAD_NO_SCALE ) &&
!( load_flags & FT_LOAD_NO_HINTING ) );
scaled = FT_BOOL( !( load_flags & FT_LOAD_NO_SCALE ) );
glyph->hint = hinting;
glyph->scaled = scaled;
@ -416,7 +416,7 @@
t1glyph,
(FT_Byte**)type1->glyph_names,
face->blend,
FT_BOOL( hinting ),
hinting,
FT_LOAD_TARGET_MODE( load_flags ),
T1_Parse_Glyph );
if ( error )
@ -424,8 +424,7 @@
must_finish_decoder = TRUE;
decoder.builder.no_recurse = FT_BOOL(
( load_flags & FT_LOAD_NO_RECURSE ) != 0 );
decoder.builder.no_recurse = FT_BOOL( load_flags & FT_LOAD_NO_RECURSE );
decoder.num_subrs = type1->num_subrs;
decoder.subrs = type1->subrs;

2
src/type1/t1load.c
View File

@ -73,7 +73,7 @@
#ifdef FT_CONFIG_OPTION_INCREMENTAL
#define IS_INCREMENTAL (FT_Bool)( face->root.internal->incremental_interface != 0 )
#define IS_INCREMENTAL FT_BOOL( face->root.internal->incremental_interface )
#else
#define IS_INCREMENTAL 0
#endif