Occasional seg fault in make check at dispatch.cc

[Michael D. Godfrey]

>
> Does the following change fix the problem for you (at least, does it
> avoid the segfault)?
>
>   http://hg.savannah.gnu.org/hgweb/octave/rev/7838271ee25c
I did a hg pull
           hg update

after your email, which I believe applied this patch.  The resulting
system has been run several times on 64 and on 32bit. 
Using your instructions for running under gdb.  Most of
the time dispatch.cc produces 2 FAILs, but never a seg fault
so far.  The output in fntests.log if the were 2 FAILS is:

 >>>>> processing /d/src/octave/hg/octave/src/DLD-FUNCTIONS/dispatch.cc
  ***** test # replace base m-file
 echo_to_file ('function a=dispatch_x(a)', "dispatch_x.m");
 dispatch('dispatch_x','length','string')
 assert(dispatch_x(3),3)
 assert(dispatch_x("a"),1)
 sleep (2);
 echo_to_file ('function a=dispatch_x(a),++a;', "dispatch_x.m");
 rehash();
 assert(dispatch_x(3),4)
 assert(dispatch_x("a"),1)
!!!!! test failed
`dispatch_x' undefined near line 5 column 9  ***** test # replace 
dispatch m-file
 echo_to_file ('function a=dispatch_y(a)', "dispatch_y.m");
 dispatch('hello','dispatch_y','complex scalar')
 assert(hello(3i),3i)
 sleep (2);
 echo_to_file ('function a=dispatch_y(a),++a;', "dispatch_y.m");
 rehash();
 assert(hello(3i),1+3i)
!!!!! test failed
`hello' undefined near line 5 column 9>>>>> processing 
/d/src/octave/hg/octave/src/DLD-
FUNCTIONS/dlmread.cc

=================================================
So, at least, this seems to have cured the seg faults.  It would be nice 
to know why...

At least once on 32 bit it ran with no FAILS.

Michael