[gs-bugs] [Bug 692569] Regression: seg fault reading PDF file

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Tue Oct 11 16:41:38 UTC 2011


http://bugs.ghostscript.com/show_bug.cgi?id=692569

Robin Watts <robin.watts at artifex.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #6 from Robin Watts <robin.watts at artifex.com> 2011-10-11 16:41:37 UTC ---
Fixed in:

commit fecf36b333ddac3e469512be536a498382741003
Author: Robin Watts <Robin.Watts at artifex.com>
Date:   Tue Oct 11 17:36:48 2011 +0100

    Fix Bug 692569; SEGV in threshold halftoning code.

    penum->xci can be negative in clist rendering of landscape cases.
    The % operator in C is broken (or at least counter-intuitive) so
    the code goes wrong; fix it up with some tweaks to the logic
    afterwards.

    In a future commit, we'll move from % 16 to & 15 (does the right thing,
    and is a lot faster).

    No differences expected.

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