[Bug c/28583] New: ICE in default_secondary_reload, at targhooks.c:532 when building libgcc2.c as _divsc3.o

["dhowells at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>]

I've come across the following whilst trying to build a gcc cross-compiler:

/warthog/frv/gcc/build/./gcc/xgcc -B/warthog/frv/gcc/build/./gcc/
-B/opt/frv-4.1/frv-linux-gnu/bin/ -B/opt/frv-4.1/frv-linux-gnu/lib/ -isystem
/opt/frv-4.1/frv-linux-gnu/include -isystem
/opt/frv-4.1/frv-linux-gnu/sys-include -O2  -O2 -g -O2  -DIN_GCC
-DCROSS_COMPILE   -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc -I.
-I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include
-I../../gcc/gcc/../libcpp/include  -I../../gcc/gcc/../libdecnumber
-I../libdecnumber -DL_divsc3 -fvisibility=hidden -DHIDE_EXPORTS -c
../../gcc/gcc/libgcc2.c -o libgcc/./_divsc3.o
../../gcc/gcc/libgcc2.c: In function ‘__divsc3’:
../../gcc/gcc/libgcc2.c:1910: internal compiler error: in
default_secondary_reload, at targhooks.c:532

The compiler sources were pulled by Subversion from the gcc repository:

Path: .
URL: svn://gcc.gnu.org/svn/gcc/trunk
Repository Root: svn://gcc.gnu.org/svn/gcc
Repository UUID: 138bc75d-0d04-0410-961f-82ee72b054a4
Revision: 115899
Node Kind: directory
Schedule: normal
Last Changed Author: schwab
Last Changed Rev: 115899
Last Changed Date: 2006-08-03 10:28:37 +0100 (Thu, 03 Aug 2006)
Properties Last Updated: 2006-08-01 21:01:27 +0100 (Tue, 01 Aug 2006)

The binutils tools being used were:

        warthog>./as --version
        GNU assembler 2.14-frv-060512-1 20031112

And the tools necessary for the compiler can be obtained from:

        http://people.redhat.com/~dhowells/frv/as
        http://people.redhat.com/~dhowells/frv/ld
        http://people.redhat.com/~dhowells/frv/ar
        http://people.redhat.com/~dhowells/frv/ranlib
        http://people.redhat.com/~dhowells/frv/nm
        http://people.redhat.com/~dhowells/frv/objdump
        http://people.redhat.com/~dhowells/frv/strip

Or in a huge tarball with lots of other stuff from:

        ftp://ftp.ges.redhat.com/private/releng/frv-060512-Fc6734/tools.tar.bz2

I've reproduced this problem compiling gcc on on an SMP i686 box and a UP
x86_64 box.  On both boxes the native compiler was installed from the
gcc-4.1.1-1.fc5 Fedora Core 5 RPMs:

warthog>gcc -v
Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre
--with-cpu=generic --host=x86_64-redhat-linux
Thread model: posix
gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)
warthog255>ssh hades gcc -v
Using built-in specs.
Target: i386-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--enable-checking=release --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-libgcj-multifile
--enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk
--disable-dssi --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre
--with-cpu=generic --host=i386-redhat-linux
Thread model: posix
gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)


The partially built gcc claims its version to be:

warthog>./gcc/xgcc -v
Using built-in specs.
Target: frv-linux-gnu
Configured with: ../gcc/configure --target=frv-linux-gnu --prefix=/opt/frv-4.1
--enable-languages=c --with-build-time-tools=/opt/frv-4.1/frv-linux-gnu/bin/
--with-as=/opt/frv-4.1/frv-linux-gnu/bin/frv-linux-gnu-as
Thread model: posix
gcc version 4.2.0 20060803 (experimental)


I configured the package with the configuration line you can see above and
then just ran "make".


The intermediate compiler can be used to trigger the bug with following
command line:

        ./gcc/xgcc -B./gcc -O2  -c wibble.c -o wibble.o

from within the build directory.  wibble.c is the attached preprocessed and
stripped down version of libgcc2.c.

Note that adding:

        #define __builtin_expect(X, Y) (X)

to the top of the file seems to make the problem go away.

David


-- 
           Summary: ICE in default_secondary_reload, at targhooks.c:532 when
                    building libgcc2.c as _divsc3.o
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dhowells at redhat dot com
 GCC build triplet: x86_64-unknown-linux-gnu, i686-pc-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu, i686-pc-linux-gnu
GCC target triplet: frv-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28583