Occasional seg fault in make check at dispatch.cc

[Michael D. Godfrey]

The following has been happening since a week or two ago:
about 1 time in 3 when I run make check (with or without strace):

[vzero:octave] strace -o trace.out make check
make -f octMakefile check
make[1]: Entering directory `/d/src/octave/hg/octave'
make -C test check
make[2]: Entering directory `/d/src/octave/hg/octave/test'
../run-octave --norc --silent --no-history ./fntests.m .

Integrated test scripts:

  src/DLD-FUNCTIONS/besselj.cc ........................... PASS  180/180
  src/DLD-FUNCTIONS/betainc.cc ........................... PASS    6/6  
  src/DLD-FUNCTIONS/bsxfun.cc ............................ PASS   55/55 
  src/DLD-FUNCTIONS/cellfun.cc ........................... PASS   74/74 
  src/DLD-FUNCTIONS/chol.cc .............................. PASS   23/23 
  src/DLD-FUNCTIONS/conv2.cc ............................. PASS    2/2  
  src/DLD-FUNCTIONS/dassl.cc ............................. PASS    4/4  
  src/DLD-FUNCTIONS/det.cc ............................... PASS    5/5  
  src/DLD-FUNCTIONS/dispatch.cc ..........................make[2]: *** 
[check] Segmentation fault
make[2]: Leaving directory `/d/src/octave/hg/octave/test'
make[1]: *** [check] Error 2
make[1]: Leaving directory `/d/src/octave/hg/octave'
make: *** [check] Error 2

===================================================================
The strace output is attached.  At first I thought that this problem was
caused by not running rehash after compile, but this is not the cause.
Even less often the src/DLD-FUNCTIONS/dispatch.cc test reports 1 FAIL.
Rerunning make check almost always succeeds.  And, so far, octave has
not failed while running after install.
Trying: gdb make
             run check
seems to hang.
This is under Fedora fc10  (x86_64) with current updates.  If more 
diagnostic
information is needed, please tell me.

Michael Godfrey

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