[Bug c++/28294] New: [4.0/4.1/4.2 regression] ICE with invalid use of __builtin_offsetof

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

The following invalid code snippet triggers an ICE since at GCC 4.0.0:

============================================
struct A
{
  static int foo();
};

int i = __builtin_offsetof(A, foo[0]);
============================================

bug.cc:6: error: pointer to a function used in arithmetic
bug.cc:6: internal compiler error: tree check: expected class 'expression',
have 'declaration' (function_decl) in finish_offsetof, at cp/semantics.c:2895
Please submit a full bug report, [etc.]

Testing a patch.


-- 
           Summary: [4.0/4.1/4.2 regression] ICE with invalid use of
                    __builtin_offsetof
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: reichelt at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28294