re PR middle-end/71529 ([CHKP] ICE in expand_expr_real_1)

gcc/

	PR middle-end/71529
	* ipa-chkp.c (chkp_build_instrumented_fndecl): Fix
	DECL_CONTEXT for copied arguments.

gcc/testsuite/

	PR middle-end/71529
	* gcc.target/i386/pr71529.C: New test.

From-SVN: r237484

gcc/ChangeLog

+2016-06-15  Ilya Enkovich  <ilya.enkovich@intel.com>
+
+	PR middle-end/71529
+	* ipa-chkp.c (chkp_build_instrumented_fndecl): Fix
+	DECL_CONTEXT for copied arguments.
+
 2016-06-15  Alan Hayward  <alan.hayward@arm.com>
 
 	PR tree-optimization/71483

gcc/ipa-chkp.c

@@ -207,7 +207,13 @@ chkp_build_instrumented_fndecl (tree fndecl)
   /* For functions with body versioning will make a copy of arguments.
      For functions with no body we need to do it here.  */
   if (!gimple_has_body_p (fndecl))
-    DECL_ARGUMENTS (new_decl) = copy_list (DECL_ARGUMENTS (fndecl));
+    {
+      tree arg;
+
+      DECL_ARGUMENTS (new_decl) = copy_list (DECL_ARGUMENTS (fndecl));
+      for (arg = DECL_ARGUMENTS (new_decl); arg; arg = DECL_CHAIN (arg))
+	DECL_CONTEXT (arg) = new_decl;
+    }
 
   /* We are going to modify attributes list and therefore should
      make own copy.  */

gcc/testsuite/ChangeLog

+2016-06-15  Ilya Enkovich  <ilya.enkovich@intel.com>
+
+	PR middle-end/71529
+	* gcc.target/i386/pr71529.C: New test.
+
 2016-06-15  Alan Hayward  <alan.hayward@arm.com>
 
 	PR tree-optimization/71483

gcc/testsuite/gcc.target/i386/pr71529.C

+/* PR71529 */
+/* { dg-do compile { target { ! x32 } } } */
+/* { dg-options "-fcheck-pointer-bounds -mmpx -O2" } */
+
+class c1
+{
+ public:
+  virtual ~c1 ();
+};
+
+class c2
+{
+ public:
+  virtual ~c2 ();
+};
+
+class c3 : c1, c2 { };
+
+int main (int, char **)
+{
+  c3 obj;
+}