Test 52 failure on AIX, HP-UX, Solaris

Test 52 fails on AIX, HP-UX, and Solaris:
52. output.at:159: testing ...
./output.at:159: VALGRIND_OPTS="$VALGRIND_OPTS --leak-check=summary --show-reachable=no";
export VALGRIND_OPTS; bison -o foo.y foo.y
2c2,3
< 
---
> /opt/TWWfsw/m414/bin/gm4:/opt/build/bison-2.4.1a/data/yacc.c:694: ERROR: copying inserted
file: Broken pipe
> /opt/TWWfsw/m414/bin/gm4: write error
52. output.at:159: 52. Conflicting output files:  -o foo.y (output.at:159): FAILED (output.at:159)

We're seeing the same failure on AIX and HP-UX.

--

-- 
albert chin (china <at> thewrittenword.com)