re PR c++/77555 (unused inline function in-function static variable accessed…

re PR c++/77555 (unused inline function in-function static variable accessed from outside leads to linker error)

2017-10-23  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/77555
	* g++.dg/torture/pr77555.C: New.

From-SVN: r254006

gcc/testsuite/ChangeLog

+2017-10-23  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/77555
+	* g++.dg/torture/pr77555.C: New.
+
 2017-10-23  Richard Biener  <rguenther@suse.de>
 
 	PR tree-optimization/82129

gcc/testsuite/g++.dg/torture/pr77555.C

+// { dg-do link }
+// { dg-options "-std=c++11" }
+
+extern "C" int printf(const char*, ...);
+struct A {
+  A(int, char *p2) { printf(p2); }
+};
+template <int, typename> struct B { static A static_var; };
+template <int LINE, typename GETTER>
+A B<LINE, GETTER>::static_var{0, GETTER::get()};
+struct C {
+  void unused() {
+    static char function_static;
+    struct D {
+      static char *get() { return &function_static; }
+    };
+    auto addr = B<0, D>::static_var;
+  }
+};
+int main() {}