unit-at-a-time build failure on arm-elf

[Richard Earnshaw]

The new unit-at-once code is causing a build failure on an arm-elf cross 
when building newlib.

cc1 -fpreprocessed ldtoa.i -quiet -dumpbase ldtoa.c -auxbase ldtoa -g -O2 
-fno-builtin -o ldtoa.s
GNU C version 3.4 20030221 (experimental) (arm-elf)
        compiled by GNU C version 2.96 20000731 (Red Hat Linux 7.1 
2.96-98).
/home/rearnsha/gnusrc/egcs-cross/newlib/libc/stdlib/ldtoa.c: In function 
`asctoeg':
/home/rearnsha/gnusrc/egcs-cross/newlib/libc/stdlib/ldtoa.c:3561: internal 
compiler error: in verify_local_live_at_start, at flow.c:590
Please submit a full bug report,

The pre-processed source is attached.



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