re PR middle-end/86202 (ICE in get_range_info calling an invalid memcpy() declaration)

	PR middle-end/86202
	* gimple-fold.c (size_must_be_zero_p): Check the type of the size.

	* gcc.dg/Wint-conversion-2.c: New test.

From-SVN: r262344

gcc/ChangeLog

+2018-07-03  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/86202
+	* gimple-fold.c (size_must_be_zero_p): Check the type of the size.
+
 2018-07-03  Richard Biener  <rguenther@suse.de>
 
 	PR ipa/86389

gcc/gimple-fold.c

@@ -645,7 +645,7 @@ size_must_be_zero_p (tree size)
   if (integer_zerop (size))
     return true;
 
-  if (TREE_CODE (size) != SSA_NAME)
+  if (TREE_CODE (size) != SSA_NAME || !INTEGRAL_TYPE_P (TREE_TYPE (size)))
     return false;
 
   wide_int min, max;

gcc/testsuite/ChangeLog

+2018-07-03  Marek Polacek  <polacek@redhat.com>
+
+	PR middle-end/86202
+	* gcc.dg/Wint-conversion-2.c: New test.
+
 2018-07-03  Richard Biener  <rguenther@suse.de>
 
 	PR ipa/86389

gcc/testsuite/gcc.dg/Wint-conversion-2.c

+/* PR middle-end/86202 */
+/* { dg-do compile } */
+/* { dg-options "-Wint-conversion" } */
+
+void *memcpy (void *, void *, __SIZE_TYPE__ *);
+void *a, *b;
+void f (void)
+{
+  long unsigned int c = 0;
+  memcpy (a, b, c); /* { dg-warning "passing argument" } */
+}