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[psaux] Add better argument check for `callothersubr'. 

* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_callothersubr>: Reject negative arguments.
This commit is contained in:
Werner Lemberg 2011-07-08 13:46:42 +02:00
parent f095744d2d
commit c46b1e2476
2 changed files with 11 additions and 2 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2011-07-08 Werner Lemberg <wl@gnu.org>
[psaux] Add better argument check for `callothersubr'.
* src/psaux/t1decode.c (t1_decoder_parse_charstrings)
<op_callothersubr>: Reject negative arguments.
2011-07-07 Werner Lemberg <wl@gnu.org>
[sfnt] Try harder to find non-zero values for ascender and descender.

6
src/psaux/t1decode.c
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@ -4,8 +4,7 @@
/* */
/* PostScript Type 1 decoding routines (body). */
/* */
/* Copyright 2000-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 */
/* 2010 by */
/* Copyright 2000-2011 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -687,6 +686,9 @@
subr_no = (FT_Int)( top[1] >> 16 );
arg_cnt = (FT_Int)( top[0] >> 16 );
if ( arg_cnt < 0 || subr_no < 0 )
goto Unexpected_OtherSubr;
/***********************************************************/
/* */
/* remove all operands to callothersubr from the stack */