re PR c/7128 (Undeclared variables as asm argument cause ICE)

	PR c/7128
	* c-typeck.c (c_expand_asm_operands): Defend against
	error_mark_nodes in the output argument to avoid ICE.

From-SVN: r58777

gcc/ChangeLog

+2002-11-03  Roger Sayle  <roger@eyesopen.com>
+
+	PR c/7128
+	* c-typeck.c (c_expand_asm_operands): Defend against
+	error_mark_nodes in the output argument to avoid ICE.
+
 2002-11-03  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR middle-end/8408

gcc/c-typeck.c

@@ -6957,7 +6957,11 @@ c_expand_asm_operands (string, outputs, inputs, clobbers, vol, filename, line)
 
   /* Record the contents of OUTPUTS before it is modified.  */
   for (i = 0, tail = outputs; tail; tail = TREE_CHAIN (tail), i++)
-    o[i] = TREE_VALUE (tail);
+    {
+      o[i] = TREE_VALUE (tail);
+      if (o[i] == error_mark_node)
+	return;
+    }
 
   /* Generate the ASM_OPERANDS insn; store into the TREE_VALUEs of
      OUTPUTS some trees for where the values were actually stored.  */