[Bug lto/42534] New: ICE with -flto when using __attribute__((__aligned__(X)))

["anton at samba dot org" <gcc-bugzilla at gcc dot gnu dot org>]

I'm hitting an ICE on gcc svn from 20091229 when building the Linux kernel with
-flto. A cutdown test case:

struct zot
{
        void *p;
        int *padding;
} __attribute__((__aligned__(128)));

void foo(struct zot *buf)
{
        int i;

        for (i = 0; i < 4; i++)
                buf->padding[i] = 0;
}

# gcc -m64 -O2 -flto -c -o test.o test.c
# gcc -m64 -O2 -flto -r -o test2.o test.o -nostdlib

In file included from :0:0:
test.c: In function 'foo':
test.c:7:6: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: /root/gcc-installed/bin/gcc returned 1 exit status
collect2: lto-wrapper returned 1 exit status


-- 
           Summary: ICE with -flto when using
                    __attribute__((__aligned__(X)))
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: anton at samba dot org
GCC target triplet: powerpc64-linux-gnu-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42534