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Date: Fri, 28 Mar 2008 21:42:00 -0000
Subject: [Bug c/35744]  New: [4.1/4.2/4.3/4.4 regression] ICE attributes for invalid types
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The following invalid code snippets triggers an ICE since GCC 4.1.0:

=========================================
struct A
{
  void x[1] __attribute__((packed));
};
=========================================

bug.c:3: error: declaration of 'x' as array of voids
bug.c:3: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in handle_packed_attribute, at c-common.c:4653
Please submit a full bug report, [etc.]


Also other attributes applied to invalid variables cause ICEs
in various places, e.g.

=================================================
typedef char x[N] __attribute__((aligned(4)));
=================================================

bug.c:1: error: 'N' undeclared here (not in a function)
bug.c:1: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in build_variant_type_copy, at tree.c:4180
Please submit a full bug report, [etc.]

=================================================
void x[1] __attribute__((vector_size(8)));
=================================================

bug.c:1: error: declaration of 'x' as array of voids
bug.c:1: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in handle_vector_size_attribute, at c-common.c:6070
Please submit a full bug report, [etc.]

=================================================
void x[1] __attribute__((may_alias));
=================================================

bug.c:1: error: declaration of 'x' as array of voids
bug.c:1: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in decl_attributes, at attribs.c:355
Please submit a full bug report, [etc.]


-- 
           Summary: [4.1/4.2/4.3/4.4 regression] ICE attributes for invalid
                    types
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code, error-recovery, monitored
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: reichelt at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35744