re PR c/10333 (typeof (bitfield) is accepted but doesn't work)

	PR c/10333
	* c-parse.in (typespec_reserved_nonattr): Reject typeof on
	bit-fields.

testsuite:
	* gcc.dg/bitfld-7.c: New test.

From-SVN: r74036

gcc/ChangeLog

+2003-11-29  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+	PR c/10333
+	* c-parse.in (typespec_reserved_nonattr): Reject typeof on
+	bit-fields.
+
 2003-11-29  Richard Sandiford  <rsandifo@redhat.com>
 
 	* stmt.c (expand_asm_operands): Check whether force_const_mem

gcc/c-parse.in

@@ -1375,7 +1375,11 @@ typespec_nonreserved_nonattr:
                 { $$ = get_object_reference ($1); }
 @@end_ifobjc
 	| typeof '(' expr ')'
-		{ skip_evaluation--; $$ = TREE_TYPE ($3); }
+		{ skip_evaluation--;
+		  if (TREE_CODE ($3) == COMPONENT_REF
+		      && DECL_C_BIT_FIELD (TREE_OPERAND ($3, 1)))
+		    error ("`typeof' applied to a bit-field");
+		  $$ = TREE_TYPE ($3); }
 	| typeof '(' typename ')'
 		{ skip_evaluation--; $$ = groktypename ($3); }
 	;

gcc/testsuite/ChangeLog

+2003-11-29  Joseph S. Myers  <jsm@polyomino.org.uk>
+
+	PR c/10333
+	* gcc.dg/bitfld-7.c: New test.
+
 2003-11-29  Richard Sandiford  <rsandifo@redhat.com>
 
 	* gcc.dg/tls/asm-1.C: New test.

gcc/testsuite/gcc.dg/bitfld-7.c

+/* Test for rejection of typeof on bit-fields.  PR c/10333.  */
+/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
+/* { dg-do compile } */
+/* { dg-options "" } */
+
+struct { int a:1; } x;
+
+typeof (x.a) z; /* { dg-error "applied to a bit-field" "typeof" } */