re PR target/65523 (ICE: in gimple_op, at gimple.h:2270 with -fcheck-pointer-bounds -mmpx)

	PR target/65523
	* tree-chkp.c (chkp_build_returned_bound): Ignore
	ERF_RETURNS_ARG calls if they have fewer than needed arguments.

	* gcc.target/i386/pr65523.c: New test.

From-SVN: r221606

gcc/ChangeLog

+2015-03-23  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/65523
+	* tree-chkp.c (chkp_build_returned_bound): Ignore
+	ERF_RETURNS_ARG calls if they have fewer than needed arguments.
+
 2015-03-23  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/65505

gcc/testsuite/ChangeLog

 2015-03-23  Jakub Jelinek  <jakub@redhat.com>
 
+	PR target/65523
+	* gcc.target/i386/pr65523.c: New test.
+
 	PR ipa/65475
 	* g++.dg/lto/pr65475_0.C: Use dg-lto-options instead of
 	dg-options.

gcc/testsuite/gcc.target/i386/pr65523.c

+/* PR target/65523 */
+/* { dg-do compile } */
+/* { dg-options "-fcheck-pointer-bounds -mmpx" } */
+
+void *memmove ();
+
+void *
+bar ()
+{
+  return memmove ();
+}

gcc/tree-chkp.c

@@ -2153,6 +2153,7 @@ chkp_build_returned_bound (gcall *call)
   tree bounds;
   gimple stmt;
   tree fndecl = gimple_call_fndecl (call);
+  unsigned int retflags;
 
   /* To avoid fixing alloca expands in targets we handle
      it separately.  */
@@ -2196,12 +2197,11 @@ chkp_build_returned_bound (gcall *call)
     }
   /* Do not use retbnd when returned bounds are equal to some
      of passed bounds.  */
-  else if (gimple_call_return_flags (call) & ERF_RETURNS_ARG)
+  else if (((retflags = gimple_call_return_flags (call)) & ERF_RETURNS_ARG)
+	   && (retflags & ERF_RETURN_ARG_MASK) < gimple_call_num_args (call))
     {
       gimple_stmt_iterator iter = gsi_for_stmt (call);
-      unsigned int retarg = 0, argno;
-      if (gimple_call_return_flags (call) & ERF_RETURNS_ARG)
-	retarg = gimple_call_return_flags (call) & ERF_RETURN_ARG_MASK;
+      unsigned int retarg = retflags & ERF_RETURN_ARG_MASK, argno;
       if (gimple_call_with_bounds_p (call))
 	{
 	  for (argno = 0; argno < gimple_call_num_args (call); argno++)