[Bug c/43264] New: Arithmetic expression error

["n-takeda at kwansei dot ac dot jp" <gcc-bugzilla at gcc dot gnu dot org>]

I use h8300-elf.

When this is executed, the value is 65536. 
If there is optional optimization (-O1), the value is 0.

command 
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user@user-laptop:~/study$ /usr/local/gcc-4.4.3_h8300-elf/bin/h8300-elf-gcc
h8300_error.c
user@user-laptop:~/study$ /usr/local/gcc-4.4.3_h8300-elf/bin/h8300-elf-run
a.out
65536

user@user-laptop:~/study$ /usr/local/gcc-4.4.3_h8300-elf/bin/h8300-elf-gcc
h8300_error.c -O1
user@user-laptop:~/study$ /usr/local/gcc-4.4.3_h8300-elf/bin/h8300-elf-run
a.out
0

os
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user@user-laptop:~/study$ uname -a
Linux user-laptop 2.6.27-17-generic #1 SMP Wed Jan 27 23:14:44 UTC 2010 i686
GNU/Linux


gcc version
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user@user-laptop:~/study$ /usr/local/gcc-4.4.3_h8300-elf/bin/h8300-elf-gcc -v
Using built-in specs.
Target: h8300-elf
Configured with: ../gcc-4.4.3/configure --target=h8300-elf
--prefix=/usr/local/gcc-4.4.3_h8300-elf/ --disable-nls --enable-languages=c
--with-newlib
--with-headers=/home/user/build/gcc-4.4.3_h8300-elf/newlib-1.18.0/newlib/libc/include/
--with-gmp=/usr/local/gmp/4.3.1/ --with-mpfr=/usr/local/mpfr/2.4.2
Thread model: single
gcc version 4.4.3 (GCC)


-- 
           Summary: Arithmetic expression error
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: n-takeda at kwansei dot ac dot jp


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43264