walkero
/
harfbuzz
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[cff] Tighten up arg-stack access

This commit is contained in:
Behdad Esfahbod 2022-05-09 18:12:09 -06:00
parent 8c616a6efe
commit 6106ef8c0f
1 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
src/hb-cff-interp-common.hh
View File

@ -360,7 +360,11 @@ struct cff_stack_t
ELEM& operator [] (unsigned int i)
{
if (unlikely (i >= count)) set_error ();
if (unlikely (i >= count))
{
set_error ();
return Crap (ELEM);
}
return elements[i];
}
@ -426,7 +430,10 @@ struct cff_stack_t
unsigned int get_count () const { return count; }
bool is_empty () const { return !count; }
protected:
hb_array_t<const ELEM> get_subarray (unsigned int start) const
{ return hb_array_t<const ELEM> (elements).sub_array (start); }
private:
bool error;
unsigned int count;
ELEM elements[LIMIT];
@ -484,9 +491,6 @@ struct arg_stack_t : cff_stack_t<ARG, 513>
return true;
}
hb_array_t<const ARG> get_subarray (unsigned int start) const
{ return hb_array_t<const ARG> (S::elements).sub_array (start); }
private:
typedef cff_stack_t<ARG, 513> S;
};