[Bug lto/48938] New: [4.7 Regression] ICE: in lto_wpa_write_files, at lto/lto.c:1992 with -O -flto --param lto-min-partition=1

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48938

           Summary: [4.7 Regression] ICE: in lto_wpa_write_files, at
                    lto/lto.c:1992 with -O -flto --param
                    lto-min-partition=1
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 24215
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24215
reduced testcase

Compiler output:
$ gcc -r -nostdlib -O -flto --param lto-min-partition=1 testcase.C 
lto1: internal compiler error: in lto_wpa_write_files, at lto/lto.c:1992
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
lto-wrapper: /mnt/svn/gcc-trunk/binary-latest/bin/gcc returned 1 exit status
collect2: lto-wrapper returned 1 exit status

Tested revisions:
r173549 - crash
4.6 r173059 - OK