* decl2.c (get_guard): Check DECL_FUNCTION_SCOPE_P.

From-SVN: r36567

gcc/testsuite/g++.old-deja/g++.pt/static11.C

+// Bug: g++ was failing to destroy C<int>::a because it was using two
+// different sentry variables for construction and destruction.
+
+extern "C" void _exit (int);
+
+int r = 1;
+
+struct A
+{
+  void f(){};
+  A(){ ++r; }
+  ~A(){ r -= 2; _exit (r); }
+};
+
+template<class T>
+struct C
+{
+  C(){ a.f(); }
+  static A a;
+};
+
+template <class T> A C<T>::a;
+typedef C<int> B;
+
+int main()
+{
+  C<int> c;
+  return r;
+}