class.c (check_bitfield_decl): New function, split out from finish_stuct_1.

	* class.c (check_bitfield_decl): New function, split out from
	finish_stuct_1.
	(check_field_decl): Likewise.  Recursively examine members of
	anonymous structs.
	(finish_struct_1): Use them.
	* cp-tree.h (ANON_UNION_TYPE_P): New macro.

From-SVN: r30381

gcc/cp/ChangeLog

+1999-11-03  Mark Mitchell  <mark@codesourcery.com>
+
+	* class.c (check_bitfield_decl): New function, split out from
+	finish_stuct_1.
+	(check_field_decl): Likewise.  Recursively examine members of
+	anonymous structs.
+	(finish_struct_1): Use them.
+	* cp-tree.h (ANON_UNION_TYPE_P): New macro.
+	
 1999-11-02  Mark Mitchell  <mark@codesourcery.com>
 
 	* decl.c (grokfndecl): Remove dead code.

gcc/cp/cp-tree.h

@@ -2321,6 +2321,10 @@ extern int flag_new_for_scope;
 #define SET_ANON_AGGR_TYPE_P(NODE)			\
   (TYPE_LANG_SPECIFIC (NODE)->anon_aggr = 1)
 
+/* Nonzero if TYPE is an anonymous union type.  */
+#define ANON_UNION_TYPE_P(NODE) \
+  (TREE_CODE (NODE) == UNION_TYPE && ANON_AGGR_TYPE_P (NODE))
+
 /* For a VAR_DECL that is an anonymous union, these are the various
    sub-variables that make up the anonymous union.  */
 #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))

gcc/testsuite/g++.old-deja/g++.ext/anon2.C

+// Build don't link:
+// Special g++ Options:
+
+struct S 
+{
+  S ();
+};
+
+union U {
+  struct { 
+    S s; // ERROR - struct with constructor in union
+  };
+};
+