re PR middle-end/66221 (lto1: error: type variant has different TYPE_ARG_TYPES)

gcc/

	PR middle-end/66221
	* ipa-chkp.c (chkp_copy_function_type_adding_bounds): Use
	build_distinct_type_copy to copy bounds.

gcc/testsuite/

	PR middle-end/66221
	* gcc.dg/lto/pr66221_0.c: New test.
	* gcc.dg/lto/pr66221_1.c: New test.

From-SVN: r223471

gcc/ChangeLog

+2015-05-21  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR middle-end/66221
+	* ipa-chkp.c (chkp_copy_function_type_adding_bounds): Use
+	build_distinct_type_copy to copy bounds.
+
 2015-05-21  Thomas Schwinge  <thomas@codesourcery.com>
 
 	* genrecog.c (MAX_DEPTH, MIN_NUM_STATEMENTS, MAX_NUM_STATEMENTS):

gcc/ipa-chkp.c

@@ -308,7 +308,7 @@ chkp_copy_function_type_adding_bounds (tree orig_type)
   if (!arg_type)
     return orig_type;
 
-  type = copy_node (orig_type);
+  type = build_distinct_type_copy (orig_type);
   TYPE_ARG_TYPES (type) = copy_list (TYPE_ARG_TYPES (type));
 
   for (arg_type = TYPE_ARG_TYPES (type);

gcc/testsuite/ChangeLog

+2015-05-21  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	PR middle-end/66221
+	* gcc.dg/lto/pr66221_0.c: New test.
+	* gcc.dg/lto/pr66221_1.c: New test.
+
 2015-05-21  Manuel López-Ibáñez  <manu@gcc.gnu.org>
 
 	PR c/52952

gcc/testsuite/gcc.dg/lto/pr66221_0.c

+/* { dg-lto-do link } */
+/* { dg-require-effective-target mpx } */
+/* { dg-lto-options { { -O2 -flto -fcheck-pointer-bounds -mmpx } } } */
+
+int test1 (const char *);
+
+int main (int argc, const char **argv)
+{
+  return test1 (argv[0]);
+}

gcc/testsuite/gcc.dg/lto/pr66221_1.c

+int test1 (const char *p)
+{
+  return (int)(*p);
+}