test failure: test-mbrtowc3.sh, SunOS 5.10

[org . gnu . bug-m4]

Compiling m4-1.4.16 on SunOS 5.9:

    FAIL: test-mbrtowc3.sh (exit: 134)
    ==================================

    test-mbrtowc.c:119: assertion failed

cc:

        Sun C 5.9 SunOS_sparc 2007/05/03

config.log:

configure:6078: checking for mbrtowc
configure:6078: cc -m32 -xc99=all -o conftest -g 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13/include 
-I/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/include 
-I/path/to/gbl__prod/s32_sun4u_s510cc59e/include 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/libin 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib64 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/libin -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib64 -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib -Wl,-R 
-Wl,/usr/sfw/lib conftest.c  >&5
"conftest.c", line 77: warning: statement not reached
configure:6078: $? = 0
configure:6078: result: yes

[snip]

configure:16873: checking whether mbrtowc handles incomplete characters
configure:16914: cc -m32 -xc99=all -o conftest -g 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13 
-I/tmp/_s32_sun4u_s510cc59e/m4-1.4.13/m4-1.4.13/include 
-I/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/include 
-I/path/to/gbl__prod/s32_sun4u_s510cc59e/include 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/libin 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib64 
-L/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/libin -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib64 -Wl,-R 
-Wl,/path/to/gbl__prod/s32_sun4u_s510cc59e/m4-1.4.13-default/lib -Wl,-R 
-Wl,/usr/sfw/lib conftest.c  >&5
configure:16914: $? = 0
configure:16914: ./conftest
configure:16914: $? = 0
configure:16926: result: yes
configure:16932: checking whether mbrtowc works as well as mbtowc
configure:16988: result: guessing yes
configure:17279: checking whether mbrtowc handles incomplete characters
configure:17332: result: yes
configure:17338: checking whether mbrtowc works as well as mbtowc
configure:17394: result: guessing yes

-- 
Yorick