[Bug c/49551] New: common variables and -fdata-sections cause ICE in C front-end.

["dougkwan at google dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49551

           Summary: common variables and -fdata-sections cause ICE in C
                    front-end.
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dougkwan@google.com


The following 2 line cause both gcc-4.6.0 and trunk to crash:

---bug.c---
int x = 1;
int x;
---
$ arm-unknown-linux-gnueabi-gcc -O -fdata-sections bug.c
bug.c:2:1: internal compiler error: in get_variable_section, at varasm.c:1004
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ arm-unknown-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=install/bin/arm-unknown-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/usr/local/google2/home/dougkwan/gcc-trunk-1/install/bin/../libexec/gcc/arm-unknown-linux-gnueabi/4.7.0/lto-wrapper
Target: arm-unknown-linux-gnueabi
Configured with: ../gcc/configure --target=arm-unknown-linux-gnueabi
--disable-bootstrap --enable-languages=c --with-gmp=/home/dougkwan/gcc-lib
--with-sysroot=/home/dougkwan/x-tools/arm-unknown-linux-gnueabi/arm-unknown-linux-gnueabi/sys-root
Thread model: posix
gcc version 4.7.0 20110607 (experimental) (GCC)