GCC-3.2.2 bootstrap FAILURE: 1 reduce/reduce conflict in objc-parse.y

[Gabriel Dos_Reis <gdosreis@sophia.inria.fr>]

A fresh checkout of 3.2.2 branch fails to bootstrap on an i686-pc-linux.  
The failure happens for Objective-C as a reduce/reduce conflict in
objc-parse.y.  I can't locate a recent change to  that file.  So I
guess it must be something having to do my settings.  I'm using Bison
1.875.  Is anyone seeing this failure?

(I'm running another bootstrap on a different machine)

-- Gaby
[...]

stage1/xgcc -Bstage1/ -B/u/molotova/0/galaad/gdosreis/.target/i686-pc-linux-gnu/i686-pc-linux-gnu/bin/ -DIN_GCC    -g -O2 -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wtraditional -pedantic -Wno-long-long  -DHAVE_CONFIG_H    -I. -I. -I/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc -I/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/. -I/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/config -I/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/../include -I/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/objc \
-c /u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/objc/objc-lang.c -o objc-lang.o
cd /u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/objc; \
if bison  -o op$$.c objc-parse.y ; then \
  test -f op$$.output && mv -f op$$.output objc-parse.output ; \
  mv -f op$$.c objc-parse.c ; \
else \
  rm -f op$$.* ; \
  false ; \
fi
objc-parse.y: conflicts: 31 shift/reduce, 1 reduce/reduce
objc-parse.y: expected 0 reduce/reduce conflicts
make[2]: *** [/u/molotova/0/galaad/gdosreis/src/redhat/gcc-3.2/gcc/objc/objc-parse.c] Error 1
make[2]: Leaving directory `/0/var/tmp/gdr/gcc/gcc'
make[1]: *** [stage2_build] Error 2
make[1]: Leaving directory `/0/var/tmp/gdr/gcc/gcc'
make: *** [bootstrap] Error 2