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[truetype] Fix HVAR and VVAR handling (#50678). 

* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Handle
glyph indices larger than `mapCount' as described in the
specification.
This commit is contained in:
Werner Lemberg 2017-03-30 13:24:03 +02:00
parent bcc74f4daf
commit da38be831d
2 changed files with 15 additions and 8 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2017-03-30 Werner Lemberg <wl@gnu.org>
[truetype] Fix HVAR and VVAR handling (#50678).
* src/truetype/ttgxvar.c (tt_hvadvance_adjust): Handle
glyph indices larger than `mapCount' as described in the
specification.
2017-03-30 Werner Lemberg <wl@gnu.org>
[truetype] Allow linear scaling for unhinted rendering (#50470).

15
src/truetype/ttgxvar.c
View File

@ -1007,16 +1007,15 @@
if ( table->widthMap.innerIndex )
{
if ( gindex >= table->widthMap.mapCount )
{
FT_TRACE2(( "gindex %d out of range\n", gindex ));
error = FT_THROW( Invalid_Argument );
goto Exit;
}
FT_UInt idx = gindex;
if ( idx >= table->widthMap.mapCount )
idx = table->widthMap.mapCount - 1;
/* trust that HVAR parser has checked indices */
outerIndex = table->widthMap.outerIndex[gindex];
innerIndex = table->widthMap.innerIndex[gindex];
outerIndex = table->widthMap.outerIndex[idx];
innerIndex = table->widthMap.innerIndex[idx];
}
else
{