PR c++/80384 - ICE with dependent noexcept-specifier

	* pt.c (dependent_type_p_r) [FUNCTION_TYPE]: Check for dependent
	noexcept-specifier.

From-SVN: r249078

gcc/cp/ChangeLog

 2017-06-09  Jason Merrill  <jason@redhat.com>
 
+	PR c++/80384 - ICE with dependent noexcept-specifier
+	* pt.c (dependent_type_p_r) [FUNCTION_TYPE]: Check for dependent
+	noexcept-specifier.
+
 	* constexpr.c (potential_constant_expression_1): Allow 'this' capture.
 
 2017-06-09  Jan Hubicka  <hubicka@ucw.cz>

gcc/cp/pt.c

@@ -23438,6 +23438,14 @@ dependent_type_p_r (tree type)
 	   arg_type = TREE_CHAIN (arg_type))
 	if (dependent_type_p (TREE_VALUE (arg_type)))
 	  return true;
+      if (cxx_dialect >= cxx1z)
+	{
+	  /* A value-dependent noexcept-specifier makes the type dependent.  */
+	  tree spec = TYPE_RAISES_EXCEPTIONS (type);
+	  if (spec && TREE_PURPOSE (spec)
+	      && value_dependent_expression_p (TREE_PURPOSE (spec)))
+	    return true;
+	}
       return false;
     }
   /* -- an array type constructed from any dependent type or whose

gcc/testsuite/g++.dg/cpp1z/noexcept-type15.C

+// PR c++/80384
+// { dg-options -std=c++17 }
+
+template<class> struct foo;
+template<bool B>
+struct foo<int() noexcept(B)> {
+    static const bool value = B; 
+};
+
+static_assert(!foo<int()>::value);
+static_assert(foo<int() noexcept>::value);