re PR c++/60046 (internal compiler error: in nothrow_spec_p, at cp/except.c:1280)

	PR c++/60046
	* pt.c (maybe_instantiate_noexcept): Don't instantiate exception
	spec from template context.

From-SVN: r207917

gcc/cp/ChangeLog

+2014-02-19  Jason Merrill  <jason@redhat.com>
+
+	PR c++/60046
+	* pt.c (maybe_instantiate_noexcept): Don't instantiate exception
+	spec from template context.
+
 2014-02-19  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/56563

gcc/cp/pt.c

@@ -19285,6 +19285,10 @@ maybe_instantiate_noexcept (tree fn)
 {
   tree fntype, spec, noex, clone;
 
+  /* Don't instantiate a noexcept-specification from template context.  */
+  if (processing_template_decl)
+    return;
+
   if (DECL_CLONED_FUNCTION_P (fn))
     fn = DECL_CLONED_FUNCTION (fn);
   fntype = TREE_TYPE (fn);

gcc/testsuite/g++.dg/cpp0x/noexcept22.C

+// PR c++/60046
+// { dg-require-effective-target c++11 }
+
+constexpr bool foo () { return noexcept (true); }
+template <typename T>
+struct V
+{
+  void bar (V &) noexcept (foo ()) {}
+};
+template <typename T>
+struct W : public V <int>
+{
+  void bar (W &x) { V <int>::bar (x); }
+};
+
+int
+main ()
+{
+  W <int> a, b;
+  a.bar (b);
+}