re PR ipa/65287 (Current trunk ICE in address_matters_p, at symtab.c:1908)

	PR ipa/65287
	* gcc.dg/ipa/pr65287.c: New test.

From-SVN: r221157

gcc/testsuite/gcc.dg/ipa/pr65287.c

+/* { dg-do compile } */
+/* { dg-require-alias "" } */
+/* { dg-options "-O2" } */
+
+const int __new_sys_siglist[] = {};
+
+extern __typeof(__new_sys_siglist) _new_sys_siglist
+    __attribute__((alias("__new_sys_siglist")));
+extern __typeof(__new_sys_siglist) _sys_siglist
+    __attribute__((alias("__new_sys_siglist")));
+
+int main()
+{
+  return 0;
+}