[Bug c/39919] New: tmpdir-gcc.dg-struct-layout-1/t024 c_compat_x_tst.o-c_compat_y_tst.o execute fails at -m64

[howarth at nitro dot med dot uc dot edu]

The tmpdir-gcc.dg-struct-layout-1/t024 c_compat_x_tst.o-c_compat_y_tst.o
execute test case fails at -m64 on powerpc-apple-darwin9. The offending section
of the test case is the line...

T(2017,union{}a atal16;,)

in t024_test.h. When that line is removed, the remainder of the test case
passes its execution test. I am attaching the preprocessed source and assembly
files for the test case when compiled, with just the line above in t024_test.h,
using the commands...

/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/ 
-I/sw/src/fink.build/gcc44-4.4.0-1000/gcc-4.4.0/gcc/testsuite/gcc.dg/compat
-fno-common -DSKIP_DECIMAL_FLOAT -c  -m64 --save-temps -o c_compat_main_tst.o

/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/testsuite/gcc/gcc.dg-struct-layout-1/t024_main.c 
/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/  -w
-I/sw/src/fink.build/gcc44-4.4.0-1000/gcc-4.4.0/gcc/testsuite/gcc.dg/compat
-fno-common -DSKIP_DECIMAL_FLOAT -c  -m64 --save-temps -o c_compat_x_tst.o

/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/testsuite/gcc/gcc.dg-struct-layout-1//t024_x.c
/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/  -w
-I/sw/src/fink.build/gcc44-4.4.0-1000/gcc-4.4.0/gcc/testsuite/gcc.dg/compat
-fno-common -DSKIP_DECIMAL_FLOAT -c  -m64 --save-temps -o c_compat_y_tst.o

/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/testsuite/gcc/gcc.dg-struct-layout-1//t024_y.c 
/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/xgcc
-B/sw/src/fink.build/gcc44-4.4.0-1000/darwin_objdir/gcc/ c_compat_main_tst.o
c_compat_x_tst.o c_compat_y_tst.o 
-I/sw/src/fink.build/gcc44-4.4.0-1000/gcc-4.4.0/gcc/testsuite/gcc.dg/compat
-fno-common   -lm   -m64 -o tmpdir-gcc-dg-struct-layout-1-t024-01.exe 

The compiler was built with the specs...

Using built-in specs.
Target: powerpc-apple-darwin9
Configured with: ../gcc-4.4.0/configure --prefix=/sw --prefix=/sw/lib/gcc4.4
--mandir=/sw/share/man --infodir=/sw/share/info
--enable-languages=c,c++,fortran,objc,java --with-gmp=/sw
--with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw --with-system-zlib
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
--disable-libjava-multilib --build=powerpc-apple-darwin9
--host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9
Thread model: posix
gcc version 4.4.0 (GCC)


-- 
           Summary: tmpdir-gcc.dg-struct-layout-1/t024 c_compat_x_tst.o-
                    c_compat_y_tst.o execute fails at -m64
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: powerpc-apple-darwin9
  GCC host triplet: powerpc-apple-darwin9
GCC target triplet: powerpc-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39919