bootstrap/3106: gcc/libiberty/strerror.c:468: conflicting types for `sys_nerr at FreeBSD4.3

[wanderer@rsu.ru]

>Number:         3106
>Category:       bootstrap
>Synopsis:       gcc/libiberty/strerror.c:468: conflicting types for `sys_nerr at FreeBSD4.3
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 10 06:56:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Vladimir Merzliakov
>Release:        3.0 20010610 (prerelease) (from gcc/version.c)
>Organization:
>Environment:
FreeBSD 4.3-STABLE (brain.k7.RELENG_4.2001-06-05)
>Description:
configure --prefix=/usr/home/wanderer/pkg/gcc --with-local-prefix=/usr/home/wanderer/pkg/gcc --with-gxx-include-dir=/usr/home/wanderer/pkg/gcc/include/g++ --enable-threads=posix --with-gnu-as --with-gnu-ld --enable-languages=c++

make bootstrap 

Break with error:

/usr/home/wanderer/pkg/build/gcc/obj/gcc/xgcc -B/usr/home/wanderer/pkg/build/gcc/obj/gcc/ -B/usr/home/wanderer/pkg/gcc/i386-un
known-freebsd4.3/bin/ -B/usr/home/wanderer/pkg/gcc/i386-unknown-freebsd4.3/lib/ -isystem /usr/home/wanderer/pkg/gcc/i386-unkno
wn-freebsd4.3/include -c -DHAVE_CONFIG_H -g -O2 -I. -I/usr/home/wanderer/pkg/build/gcc/src/gcc30/gcc/libiberty/../include  -W
-Wall -Wtraditional -pedantic /usr/home/wanderer/pkg/build/gcc/src/gcc30/gcc/libiberty/strerror.c
/usr/home/wanderer/pkg/build/gcc/src/gcc30/gcc/libiberty/strerror.c:468: conflicting types for `sys_nerr'
/usr/include/stdio.h:224: previous declaration of `sys_nerr'
gmake[2]: *** [strerror.o] Error 1
gmake[2]: Leaving directory `/usr/home/wanderer/pkg/build/gcc/obj/i386-unknown-freebsd4.3/libiberty'
gmake[1]: *** [all-target-libiberty] Error 2
gmake[1]: Leaving directory `/usr/home/wanderer/pkg/build/gcc/obj'
gmake: *** [bootstrap] Error 2

Same error exist in 3.1 20010610 (experimental) 
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: