build failure bootstrapping trunk on Ubuntu 9.10

[Matt]

I'm getting this build failure with latest trunk, as of the composing of 
this email:

../gcc-trunk/configure --prefix=/home/matt --enable-stage1-checking=all 
--enable-bootstrap --enable-lto 
--enable-languages=c,c++../gcc-trunk/configure --prefix=/home/matt 
--enable-stage1-checking=all --enable-bootstrap --enable-lto 
--enable-languages=c,c++

make -j5

.
.
.
/home/matt/src/gcc-obj/./prev-gcc/xgcc 
-B/home/matt/src/gcc-obj/./prev-gcc/ 
-B/home/matt/x86_64-unknown-linux-gnu/bin/ 
-B/home/matt/x86_64-unknown-linux-gnu/bin/ 
-B/home/matt/x86_64-unknown-linux-gnu/lib/ -isystem 
/home/matt/x86_64-unknown-linux-gnu/include -isystem 
/home/matt/x86_64-unknown-linux-gnu/sys-include    -c  -g -O2 
-fprofile-use -DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual 
-Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute 
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings 
-Werror -Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H 
-I. -I. -I../../gcc-trunk/gcc -I../../gcc-trunk/gcc/. 
-I../../gcc-trunk/gcc/../include -I../../gcc-trunk/gcc/../libcpp/include 
-I../../gcc-trunk/gcc/../libdecnumber 
-I../../gcc-trunk/gcc/../libdecnumber/bid -I../libdecnumber 
-DCLOOG_PPL_BACKEND  -I/usr/include/libelf 
../../gcc-trunk/gcc/ira-lives.c -o ira-lives.o

cc1: warnings being treated as errors
../../gcc-trunk/gcc/ira-lives.c: In function 
ira_implicitly_set_insn_hard_regs:
../../gcc-trunk/gcc/ira-lives.c:748:13: error: regno may be used 
uninitialized in this function



It looks like ira-lives.c:763 has some ambiguous parenthesizing that may 
be causing the warning that is failing the build). Note that the warning 
doesn't happen on a similar piece of code on line 830 in the same file.

I've been fighting with the configure process for a few days and finally 
got past that to this issue. So, any help is greatly appreciated :)

Thanks!

--
tangled strands of DNA explain the way that I behave.
http://www.clock.org/~matt