[Bug c++/21440] New: [4.0 Regression] ICE with statement-as-expression

["dank at kegel dot com" <gcc-bugzilla at gcc dot gnu dot org>]

The following test program works with gcc-2.95.3 and gcc-3.4.1,
but aborts with this error on gcc-4.0.0:

z.ii: In function 'void bar()':
z.ii:11: internal compiler error: in create_tmp_var, at gimplify.c:368


struct Foo {
  ~Foo() {}
  int i;
  operator bool() { return !i; }
};

void bar() {
    Foo foo = ({
        Foo bletch;
        bletch.i = 0;
        bletch;
    });
}

This popped up in an early run of gcc-4.0.0 on real code.

-- 
           Summary: [4.0 Regression] ICE with statement-as-expression
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dank at kegel dot com
                CC: gcc-bugs at gcc dot gnu dot org
  GCC host triplet: i686-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21440