[Git][freetype/freetype][master] 2 commits: * src/cff/cffdrivr/c (cff_get_ps_name): Avoid unnecessary crash.

[Werner Lemberg (@wl)]

Werner Lemberg pushed to branch master at FreeType / FreeType

Commits:

• 966ff5a5
  by Werner Lemberg at 2023-04-28T15:25:20+02:00

  * src/cff/cffdrivr/c (cff_get_ps_name): Avoid unnecessary crash.
  
  The situation can happen if `FT_New_Face` (or one of its siblings) is called
  with a negative index to get the number of contained faces, followed
  immediately by a call to `FT_Get_Postscript_Name`.  While this is not a valid
  use of the FreeType library there is no need for a crash.
  
  Fixes #1219.
  

• 08268691
  by Werner Lemberg at 2023-04-28T15:33:58+02:00

  * src/sfnt/ttload.c (tt_face_load_font_dir): Add another guard.
  
  Reject 'OTTO' fonts with no valid tables.
  

2 changed files:

• src/cff/cffdrivr.c
• src/sfnt/ttload.c

Changes:

src/cff/cffdrivr.c

---

...	...	@@ -634,7 +634,7 @@
634	634	return service->get_ps_font_name( FT_FACE( face ) );
635	635	}
636	636
637		- return (const char*)cff->font_name;
	637	+ return cff ? (const char*)cff->font_name : NULL;
638	638	}
639	639
640	640

src/sfnt/ttload.c

---

...	...	@@ -504,6 +504,13 @@
504	504
505	505	FT_FRAME_EXIT();
506	506
	507	+ if ( !valid_entries )
	508	+ {
	509	+ FT_TRACE2(( "tt_face_load_font_dir: no valid tables found\n" ));
	510	+ error = FT_THROW( Unknown_File_Format );
	511	+ goto Exit;
	512	+ }
	513	+
507	514	FT_TRACE2(( "table directory loaded\n" ));
508	515	FT_TRACE2(( "\n" ));
509	516

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