--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/gcc.dg/pr26427.c	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,24 @@
+/* { dg-warning "this target does not support" "" {target *86*-*-darwin* } 0 } */
+/* { dg-do run { target { *-*-darwin* } } } */
+/* { dg-options { -fsection-anchors -O } } */
+/* PR target/26427 */
+
+struct a {};
+static const int d = 1;
+static const struct a b = {};
+static const int c = 1;
+int f(const int *, const struct a *, const int*, const int*);
+
+int g(void) {
+  return f(&c, &b, &d, &c);
+}
+
+int f(const int *b, const struct a *c, const int *d, const int *e) {
+  return *b == *d;
+}
+
+int main(void) {
+  if (!g())
+    __builtin_abort();
+  return 0;
+}