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[pfr] Various clang sanitizer fixes. 

* src/pfr/pfrsbit.c (pfr_load_bitmap_metrics): Correctly handle
signed nibbles.
(pfr_slot_load_bitmap): Correctly exit frame in case of error.
Fix invalid left shifts.
This commit is contained in:
Werner Lemberg 2016-03-25 08:47:14 +01:00
parent 98967b77e5
commit 59828f72a2
2 changed files with 18 additions and 7 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2016-03-25 Werner Lemberg <wl@gnu.org>
[pfr] Various clang sanitizer fixes.
* src/pfr/pfrsbit.c (pfr_load_bitmap_metrics): Correctly handle
signed nibbles.
(pfr_slot_load_bitmap): Correctly exit frame in case of error.
Fix invalid left shifts.
2016-03-23 Werner Lemberg <wl@gnu.org>
Rename `VERSION.DLL' (#47472).

16
src/pfr/pfrsbit.c
View File

@ -357,7 +357,6 @@
{
FT_Error error = FT_Err_Ok;
FT_Byte flags;
FT_Char c;
FT_Byte b;
FT_Byte* p = *pdata;
FT_Long xpos, ypos, advance;
@ -377,9 +376,9 @@
{
case 0:
PFR_CHECK( 1 );
c = PFR_NEXT_INT8( p );
xpos = c >> 4;
ypos = ( (FT_Char)( c << 4 ) ) >> 4;
b = PFR_NEXT_BYTE( p );
xpos = (FT_Char)b >> 4;
ypos = ( (FT_Char)( b << 4 ) ) >> 4;
break;
case 1:
@ -630,6 +629,8 @@
&xpos, &ypos,
&xsize, &ysize,
&advance, &format );
if ( error )
goto Exit1;
/*
* Before allocating the target bitmap, we check whether the given
@ -675,7 +676,7 @@
{
if ( FT_ERR_EQ( error, Invalid_Table ) )
FT_ERROR(( "pfr_slot_load_bitmap: invalid bitmap dimensions\n" ));
goto Exit;
goto Exit1;
}
/*
@ -710,8 +711,8 @@
/* XXX: needs casts to fit FT_Glyph_Metrics.{width|height} */
glyph->root.metrics.width = (FT_Pos)xsize << 6;
glyph->root.metrics.height = (FT_Pos)ysize << 6;
glyph->root.metrics.horiBearingX = xpos << 6;
glyph->root.metrics.horiBearingY = ypos << 6;
glyph->root.metrics.horiBearingX = xpos * 64;
glyph->root.metrics.horiBearingY = ypos * 64;
glyph->root.metrics.horiAdvance = FT_PIX_ROUND( ( advance >> 2 ) );
glyph->root.metrics.vertBearingX = - glyph->root.metrics.width >> 1;
glyph->root.metrics.vertBearingY = 0;
@ -737,6 +738,7 @@
}
}
Exit1:
FT_FRAME_EXIT();
}