re PR target/67405 (ICE on invalid use of struct on x86_64-linux-gnu)

gcc/

	PR target/67405
	* tree-chkp.c (chkp_find_bound_slots_1): Add NULL check.

gcc/testsuite/

	PR target/67405
	* g++.dg/pr67405.C: New test.

From-SVN: r227373

gcc/ChangeLog

+2015-09-01  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/67405
+	* tree-chkp.c (chkp_find_bound_slots_1): Add NULL check.
+
 2015-09-01  Aldy Hernandez  <aldyh@redhat.com>
 
 	* trans-mem.c: Add contributed-by.

gcc/testsuite/ChangeLog

+2015-09-01  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR target/67405
+	* g++.dg/pr67405.C: New test.
+
 2015-09-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* gcc.dg/vect/no-scevccp-outer-11.c: Don't xfail scan-tree-dump-times.

gcc/testsuite/g++.dg/pr67405.C

+// { dg-do compile }
+
+struct S
+{
+  S f; // { dg-error "incomplete type" }
+};
+
+void
+fn1 (S p1)
+{
+}

gcc/tree-chkp.c

@@ -1667,8 +1667,9 @@ chkp_find_bound_slots_1 (const_tree type, bitmap have_bound,
       for (field = TYPE_FIELDS (type); field; field = DECL_CHAIN (field))
 	if (TREE_CODE (field) == FIELD_DECL)
 	  {
-	    HOST_WIDE_INT field_offs
-	      = TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field));
+	    HOST_WIDE_INT field_offs = 0;
+	    if (DECL_FIELD_BIT_OFFSET (field))
+	      field_offs += TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field));
 	    if (DECL_FIELD_OFFSET (field))
 	      field_offs += TREE_INT_CST_LOW (DECL_FIELD_OFFSET (field)) * 8;
 	    chkp_find_bound_slots_1 (TREE_TYPE (field), have_bound,