http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48401

           Summary: [4.7 Regression] ICE: RTL check: access of elt 4 of
                    'var_location' with last elt 2 in
                    expand_gimple_basic_block, at cfgexpand.c:3585
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: zso...@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 23848
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23848
reduced testcase

Compiler output:
$ gcc -O -fdump-rtl-expand-details -g testcase.c
testcase.c: In function 'foo':
testcase.c:1:6: internal compiler error: RTL check: access of elt 4 of
'var_location' with last elt 2 in expand_gimple_basic_block, at
cfgexpand.c:3585
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r171828 - crash
r171801 - crash
r171795 - crash
r171775 - OK
4.6 r171597 - OK

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