[gs-bugs] [Bug 690519] Potential SEGV when dev_color substructures are moved.

bugs.ghostscript.com-bugzilla-daemon at ghostscript.com bugs.ghostscript.com-bugzilla-daemon at ghostscript.com
Sun Jul 12 19:15:56 PDT 2009


http://bugs.ghostscript.com/show_bug.cgi?id=690519

ray.johnston at artifex.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|ray.johnston at artifex.com    |ralph.giles at artifex.com
             Status|ASSIGNED                    |NEW
           Priority|P1                          |P3
            Summary|Regression: core dump with  |Potential SEGV when
                   |PP0001G0.pdf                |dev_color substructures are
                   |                            |moved.



------- Additional Comments From ray.johnston at artifex.com  2009-07-12 19:15 -------
Rev 9846 fixed (or at least works around) this rare case where a GC runs during
the collection of a pattern bitmap.

The underlying cause may not yet be resolved since further analysis shows that
the gstate dev_color structure is incompletely traced. The c_ht pointer in the
'colors' union was not being relocated, and probably the pointers in the binary
part of the union, e.g. b_ht, are not traced and relocated either.

Reducing the priority to P3 as a clean-up issue and assigning to Ralph. I am
also changing the description since it is now just a concept that MAY lead to
a seg fault.

I am available to help track this if desired.



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