[Bug c++/20147] New: [3.4/4.0 regression] ICE on undefined variable in statement expression

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

The C++ frontend issues an ICE when compiling the following invalid
code snippet:

================
void foo()
{
    ({x;});
}
================

bug.cc: In function 'void foo()':
bug.cc:3: error: 'x' was not declared in this scope
bug.cc:3: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in finish_stmt_expr_expr, at cp/semantics.c:1546
Please submit a full bug report, [etc.]

The appeared in gcc 3.4.0.

-- 
           Summary: [3.4/4.0 regression] ICE on undefined variable in
                    statement expression
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20147