src/truetype/ttgload.c: says
/* Maximum recursion depth we allow for composite glyphs.
* The TrueType spec doesn't say anything about recursion,
* so it isn't clear that recursion is allowed at all. But
* we'll be generous.
*/
#define TT_MAX_COMPOSITE_RECURSE 5
This value is used to specify the maximum depth allowed to which
composite glyphs may be nested.
But the truetype spec does talk about this, it's a field in maxp
maxComponentDepth. So I suggest the following patch:
(True, there aren't many fonts with composites nested 5 deep, but
someone gave me one)
*** ttgload.c~ 2005-08-28 20:58:37.000000000 -0700
--- ttgload.c 2005-08-28 20:58:37.000000000 -0700
***************
*** 63,76 ****
#define UNSCALED_COMPONENT_OFFSET 0x1000
- /* Maximum recursion depth we allow for composite glyphs.
- * The TrueType spec doesn't say anything about recursion,
- * so it isn't clear that recursion is allowed at all. But
- * we'll be generous.
- */
- #define TT_MAX_COMPOSITE_RECURSE 5
-
-
/*************************************************************************/
/* */
--- 63,68 ----
***************
*** 984,990 ****
#endif
! if ( recurse_count >= TT_MAX_COMPOSITE_RECURSE )
{
error = TT_Err_Invalid_Composite;
goto Exit;
--- 976,982 ----
#endif
! if ( recurse_count > face->max_profile.maxComponentDepth )
{
error = TT_Err_Invalid_Composite;
goto Exit;
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