[Bug java/23300] New: DECL_FIELD_OFFSET == 0 versus build_field_ref

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

If I copy the current cvs classpath into the libjava build directory
and try to build, I get an ICE.

The problem occurs because of this code in build_field_ref:

      if (! flag_syntax_only
	  && (flag_indirect_dispatch
	      /* DECL_FIELD_OFFSET == 0 if we have no reference for
		 the field, perhaps because we couldn't find the class
		 in which the field is defined.  
		 FIXME: We should investigate this.  */
	      || DECL_FIELD_OFFSET (field_decl) == 0))

... flag_indirect_dispatch is false, but we have DECL_FIELD_OFFSET==0
for a 'this$0' field.  So, we wind up using the indirect dispatch code
anyway.  This causes a later crash (we build a bogus tree since the
otable is NULL).

I haven't investigated why DECL_FIELD_OFFSET can be 0 here.

-- 
           Summary: DECL_FIELD_OFFSET == 0 versus build_field_ref
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tromey at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu
                    dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23300