c-decl.c (grokdeclarator): Handle type being a typedef for an invalid type.

	* c-decl.c (grokdeclarator): Handle type being a typedef for an
	invalid type.

testsuite:
	* gcc.dg/noncompile/20020130-1.c: New test.

From-SVN: r49352

gcc/ChangeLog

+2002-01-31  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* c-decl.c (grokdeclarator): Handle type being a typedef for an
+	invalid type.
+
 2002-01-30  David O'Brien  <obrien@FreeBSD.org>
 
 	* config.gcc: Include sparc/biarch64.h rather than sparc/sparc_bi.h.

gcc/c-decl.c

@@ -4241,9 +4241,14 @@ grokdeclarator (declarator, declspecs, decl_context, initialized, width)
       /* Actual typedefs come to us as TYPE_DECL nodes.  */
       else if (TREE_CODE (id) == TYPE_DECL)
 	{
-	  type = TREE_TYPE (id);
-	  decl_attr = DECL_ATTRIBUTES (id);
-	  typedef_decl = id;
+	  if (TREE_TYPE (id) == error_mark_node)
+	    ; /* Allow the type to default to int to avoid cascading errors.  */
+	  else
+	    {
+	      type = TREE_TYPE (id);
+	      decl_attr = DECL_ATTRIBUTES (id);
+	      typedef_decl = id;
+	    }
 	}
       /* Built-in types come as identifiers.  */
       else if (TREE_CODE (id) == IDENTIFIER_NODE)

gcc/testsuite/ChangeLog

+2002-01-31  Joseph S. Myers  <jsm28@cam.ac.uk>
+
+	* gcc.dg/noncompile/20020130-1.c: New test.
+
 2002-01-30  David Billinghurst  <David.Billinghurst@riotinto.com>
 
 	* g77.dg/f77-edit-i-out.f:  Escape \. Allow \r\n and \r.

gcc/testsuite/gcc.dg/noncompile/20020130-1.c

+/* Test for ICE when using typedef for bad type.  */
+/* Origin: Joseph Myers <jsm28@cam.ac.uk>.  */
+
+void
+foo (void)
+{
+  typedef int t[x]; /* { dg-error "undeclared|function" "x undeclared" } */
+  t bar;
+}