re PR sanitizer/70875 (ICE in get_ubsan_type_info_for_type with -fsanitize=undefined)

	PR sanitizer/70875
	* ubsan.c (get_ubsan_type_info_for_type): Remove assert.

	* gcc.dg/ubsan/bounds-3.c: New test.

From-SVN: r235951

gcc/ChangeLog

+2016-05-06  Marek Polacek  <polacek@redhat.com>
+
+	PR sanitizer/70875
+	* ubsan.c (get_ubsan_type_info_for_type): Remove assert.
+
 2016-05-06  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/54089

gcc/testsuite/ChangeLog

+2016-05-06  Marek Polacek  <polacek@redhat.com>
+
+	PR sanitizer/70875
+	* gcc.dg/ubsan/bounds-3.c: New test.
+
 2016-05-06  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/54089

gcc/testsuite/gcc.dg/ubsan/bounds-3.c

+/* PR sanitizer/70875 */
+/* { dg-do run } */
+/* { dg-options "-fsanitize=bounds" } */
+
+int
+foo (int n, int k)
+{
+  struct S
+  {
+    int i[n];
+    int value;
+  } s[2];
+  return s[k].value = 0;
+}
+
+int
+main ()
+{
+  return foo (2, 2);
+}
+
+/* { dg-output "index 2 out of bounds for type 'S \\\[2\\\]'" } */

gcc/ubsan.c

@@ -302,7 +302,6 @@ ubsan_source_location (location_t loc)
 static unsigned short
 get_ubsan_type_info_for_type (tree type)
 {
-  gcc_assert (TYPE_SIZE (type) && tree_fits_uhwi_p (TYPE_SIZE (type)));
   if (TREE_CODE (type) == REAL_TYPE)
     return tree_to_uhwi (TYPE_SIZE (type));
   else if (INTEGRAL_TYPE_P (type))