[Bug target/54661] New: mcore_output_movedouble: operation on ‘memexp’ may be undefined

[amylaar at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54661

             Bug #: 54661
           Summary: mcore_output_movedouble: operation on ‘memexp’ may be
                    undefined
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: amylaar@gcc.gnu.org
                CC: nickc@redhat.com
            Blocks: 44756
            Target: mcore-elf


g++ -c   -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -fno-exceptions -fno-rtti 
-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror
-fno-common  -DHAVE_CONFIG_H -I. -I. -I../../../gcc/gcc -I../../../gcc/gcc/.
-I../../../gcc/gcc/../include -I../../../gcc/gcc/../libcpp/include 
-I../../../gcc/gcc/../libdecnumber -I../../../gcc/gcc/../libdecnumber/dpd
-I../libdecnumber    \
        ../../../gcc/gcc/config/mcore/mcore.c -o mcore.o
In file included from ../../../gcc/gcc/config/mcore/mcore.c:25:0:
../../../gcc/gcc/config/mcore/mcore.c: In function ‘const char*
mcore_output_movedouble(rtx_def**, machine_mode)’:
../../../gcc/gcc/rtl.h:767:59: error: operation on ‘memexp’ may be undefined
[-Werror=sequence-point]
 #define XEXP(RTX, N) (RTL_CHECK2 (RTX, N, 'e', 'u').rt_rtx)
                                                           ^
../../../gcc/gcc/config/mcore/mcore.c:1345:26: note: in expansion of macro
'XEXP'
    rtx memexp = memexp = XEXP (src, 0);
                          ^
cc1plus: all warnings being treated as errors
make[2]: *** [mcore.o] Error 1
rm gcov.pod gcc.pod cpp.pod fsf-funding.pod gccgo.pod gfortran.pod gfdl.pod
make[2]: Leaving directory `/home/amylaar/fsf/multi/mcore-elf/gcc'
make[1]: *** [all-gcc] Error 2
make[1]: Leaving directory `/home/amylaar/fsf/multi/mcore-elf'