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[base, type1] Better handling of out-of-memory situations.

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This follows similar code in `cff_slot_done`.

* src/base/ftobjs.c (ft_glyphslot_done), src/type1/t1objs.c
(T1_GlyphSlot_Done): Check `internal` pointer.

The Type1 problems was reported as

  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50057.
This commit is contained in:
Chris Liddell 2022-08-15 10:44:05 +01:00 committed by Werner Lemberg
parent 7cd3f19f21
commit 37b718d589
2 changed files with 6 additions and 3 deletions
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5
src/base/ftobjs.c
View File

@ -631,8 +631,9 @@
#ifdef FT_CONFIG_OPTION_SVG
if ( slot->face->face_flags & FT_FACE_FLAG_SVG )
{
/* free memory in case SVG was there */
if ( slot->internal->flags & FT_GLYPH_OWN_GZIP_SVG )
/* Free memory in case SVG was there. */
/* `slot->internal` might be NULL in out-of-memory situations. */
if ( slot->internal && slot->internal->flags & FT_GLYPH_OWN_GZIP_SVG )
{
FT_SVG_Document doc = (FT_SVG_Document)slot->other;

4
src/type1/t1objs.c
View File

@ -146,7 +146,9 @@
FT_LOCAL_DEF( void )
T1_GlyphSlot_Done( FT_GlyphSlot slot )
{
slot->internal->glyph_hints = NULL;
/* `slot->internal` might be NULL in out-of-memory situations. */
if ( slot->internal )
slot->internal->glyph_hints = NULL;
}