re PR rtl-optimization/56356 (DJGPP compiler crashing)

	PR rtl-optimization/56356
	* sdbout.c (sdbout_parms): Verify that parms'
	incoming argument is valid.
	(sdbout_reg_parms): Likewise.

From-SVN: r208663

gcc/ChangeLog

+2014-03-18  Kai Tietz  <ktietz@redhat.com>
+
+	PR rtl-optimization/56356
+	* sdbout.c (sdbout_parms): Verify that parms'
+	incoming argument is valid.
+	(sdbout_reg_parms): Likewise.
+
 2014-03-18  Richard Henderson  <rth@redhat.com>
 
 	PR target/60562

gcc/sdbout.c

@@ -1229,7 +1229,10 @@ static void
 sdbout_parms (tree parms)
 {
   for (; parms; parms = TREE_CHAIN (parms))
-    if (DECL_NAME (parms))
+    if (DECL_NAME (parms)
+	&& TREE_TYPE (parms) != error_mark_node
+	&& DECL_RTL_SET_P (parms)
+	&& DECL_INCOMING_RTL (parms))
       {
 	int current_sym_value = 0;
 	const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));
@@ -1361,7 +1364,10 @@ static void
 sdbout_reg_parms (tree parms)
 {
   for (; parms; parms = TREE_CHAIN (parms))
-    if (DECL_NAME (parms))
+    if (DECL_NAME (parms)
+        && TREE_TYPE (parms) != error_mark_node
+        && DECL_RTL_SET_P (parms)
+        && DECL_INCOMING_RTL (parms))
       {
 	const char *name = IDENTIFIER_POINTER (DECL_NAME (parms));