[Bug optimization/11403] New: ICE in cgraph_remove_edge, at cgraph.c:182 when compiling with -O3

["martin at mpa-garching dot mpg dot de" <gcc-bugzilla at gcc dot gnu dot org>]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11403

           Summary: ICE in cgraph_remove_edge, at cgraph.c:182 when
                    compiling with -O3
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: martin at mpa-garching dot mpg dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu

The ICE occurs when compiling the attached testcase using -O3.
Curiously, the header file <iostream> must be included to reproduce the ICE,
although none of its functionality is used.

The ICE is most likely caused by the new unit-at-a-time code, because it goes
away when -fno-unit-at-a-time is specified.

This is a regression grom gcc-3.3.