Hi,
when bootstrapping GCC/newlib for arm/thumb using gcc-4.5.1 or
gcc-4_5-branch, I am facing a GCC ICE:
...
/builddir/build/BUILD/rtems-4.11-arm-rtems4.11-gcc-4.5.1/build/./gcc/xgcc -B/builddir/build/BUILD/rtems-4.11-arm-rtems4.11-gcc-4.5.1/build/./gcc/
-nostdinc
-B/builddir/build/BUILD/rtems-4.11-arm-rtems4.11-gcc-4.5.1/build/arm-rtems4.11/thumb/newlib/
-isystem
/builddir/build/BUILD/rtems-4.11-arm-rtems4.11-gcc-4.5.1/build/arm-rtems4.11/thumb/newlib/targ-include
-isystem
/builddir/build/BUILD/rtems-4.11-arm-rtems4.11-gcc-4.5.1/gcc-4.5.1/newlib/libc/include
-B/opt/rtems-4.11/arm-rtems4.11/bin/
-B/opt/rtems-4.11/arm-rtems4.11/lib/ -isystem
/opt/rtems-4.11/arm-rtems4.11/include -isystem
/opt/rtems-4.11/arm-rtems4.11/sys-include -mthumb
-DPACKAGE_NAME=\"newlib\" -DPACKAGE_TARNAME=\"newlib\"
-DPACKAGE_VERSION=\"1.18.0\" -DPACKAGE_STRING=\"newlib\ 1.18.0\"
-DPACKAGE_BUGREPORT=\"\" -I.
-I../../../../../../gcc-4.5.1/newlib/libm/complex
-I../../../../../../gcc-4.5.1/newlib/libm/complex/../common
-I../../../../../../gcc-4.5.1/newlib/libm/complex/ -D_COMPILING_NEWLIB
-DMALLOC_PROVIDED -DEXIT_PROVIDED -DSIGNAL_PROVIDED
-DREENTRANT_SYSCALLS_PROVIDED -DHAVE_NANOSLEEP -DHAVE_BLKSIZE
-DHAVE_FCNTL -DHAVE_ASSERT_FUNC -D_NO_GETLOGIN -D_NO_GETPWENT
-D_NO_GETUT -D_NO_GETPASS -D_NO_SIGSET -D_NO_WORDEXP -D_NO_POPEN
-fno-builtin -g -O2 -mthumb -c -o lib_a-cacos.o `test -f 'cacos.c' ||
echo '../../../../../../gcc-4.5.1/newlib/libm/complex/'`cacos.c
../../../../../../gcc-4.5.1/newlib/libm/complex/cacos.c: In function
'cacos':
../../../../../../gcc-4.5.1/newlib/libm/complex/cacos.c:46:1: internal
compiler error: in find_valid_class, at reload.c:704
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[8]: *** [lib_a-cacos.o] Error 1
Though this definitely is a compiler bug, I found reordering the code in
complex/cacos.c lets building succeed.
I am going to add this patch to RTEMS newlib patches and would
appreciate if it was considered for inclusion in newlib.
TIA,
Ralf