===================================================================
@@ -0,0 +1,32 @@
+// { dg-do compile { target c++11_only } }
+// { dg-options "-pedantic-errors" }
+
+// These *are* defined in C++14 onwards.
+
+#ifndef __cpp_binary_literals
+# error "__cpp_binary_literals" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_init_captures
+# error "__cpp_init_captures" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_generic_lambdas
+# error "__cpp_generic_lambdas" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_decltype_auto
+# error "__cpp_decltype_auto" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_runtime_arrays
+# error "__cpp_runtime_arrays" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_digit_separators
+# error "__cpp_digit_separators" // { dg-error "error" }
+#endif
+
+#ifndef __cpp_attribute_deprecated
+# error "__cpp_attribute_deprecated" // { dg-error "error" }
+#endif
===================================================================
@@ -0,0 +1,94 @@
+// { dg-do compile }
+// { dg-options "-std=gnu++11" }
+
+#ifndef __cpp_unicode_characters
+# error "__cpp_unicode_characters"
+#elif __cpp_unicode_characters != 200704
+# error "__cpp_unicode_characters != 200704"
+#endif
+
+#ifndef __cpp_raw_strings
+# error "__cpp_raw_strings"
+#elif __cpp_raw_strings != 200710
+# error "__cpp_raw_strings != 200710"
+#endif
+
+#ifndef __cpp_unicode_literals
+# error "__cpp_unicode_literals"
+#elif __cpp_unicode_literals != 200710
+# error "__cpp_unicode_literals != 200710"
+#endif
+
+#ifndef __cpp_user_defined_literals
+# error "__cpp_user_defined_literals"
+#elif __cpp_user_defined_literals != 200809
+# error "__cpp_user_defined_literals != 200809"
+#endif
+
+#ifndef __cpp_lambdas
+# error "__cpp_lambdas"
+#elif __cpp_lambdas != 200907
+# error "__cpp_lambdas != 200907"
+#endif
+
+#ifndef __cpp_constexpr
+# error "__cpp_constexpr"
+#elif __cpp_constexpr != 200704
+# error "__cpp_constexpr != 200704"
+#endif
+
+#ifndef __cpp_static_assert
+# error "__cpp_static_assert"
+#elif __cpp_static_assert != 200410
+# error "__cpp_static_assert != 200410"
+#endif
+
+#ifndef __cpp_decltype
+# error "__cpp_decltype"
+#elif __cpp_decltype != 200707
+# error "__cpp_decltype != 200707"
+#endif
+
+#ifndef __cpp_attributes
+# error "__cpp_attributes"
+#elif __cpp_attributes != 200809
+# error "__cpp_attributes != 200809"
+#endif
+
+#ifndef __cpp_rvalue_reference
+# error "__cpp_rvalue_reference"
+#elif __cpp_rvalue_reference != 200610
+# error "__cpp_rvalue_reference != 200610"
+#endif
+
+#ifndef __cpp_variadic_templates
+# error "__cpp_variadic_templates"
+#elif __cpp_variadic_templates != 200704
+# error "__cpp_variadic_templates != 200704"
+#endif
+
+#ifndef __cpp_alias_templates
+# error "__cpp_alias_templates"
+#elif __cpp_alias_templates != 200704
+# error "__cpp_alias_templates != 200704"
+#endif
+
+// This C++14 feature was developed as an extension for C++11.
+#ifndef __cpp_return_type_deduction
+# error "__cpp_return_type_deduction"
+#elif __cpp_return_type_deduction != 201304
+# error "__cpp_return_type_deduction != 201304"
+#endif
+
+// These C++14 features are allowed in C++11 in non-ANSI modes.
+#ifndef __cpp_binary_literals
+# error "__cpp_binary_literals"
+#elif __cpp_binary_literals != 201304
+# error "__cpp_binary_literals != 201304"
+#endif
+
+#ifndef __cpp_runtime_arrays
+# error "__cpp_runtime_arrays"
+#elif __cpp_runtime_arrays != 201304
+# error "__cpp_runtime_arrays != 201304"
+#endif
===================================================================
@@ -0,0 +1,232 @@
+// { dg-do compile { target c++14 } }
+// { dg-options "-I${srcdir}/g++.dg/cpp1y -I${srcdir}/g++.dg/cpp1y/testinc" }
+
+// Begin C++11 tests.
+
+#ifndef __cpp_unicode_characters
+# error "__cpp_unicode_characters"
+#elif __cpp_unicode_characters != 200704
+# error "__cpp_unicode_characters != 200704"
+#endif
+
+#ifndef __cpp_raw_strings
+# error "__cpp_raw_strings"
+#elif __cpp_raw_strings != 200710
+# error "__cpp_raw_strings != 200710"
+#endif
+
+#ifndef __cpp_unicode_literals
+# error "__cpp_unicode_literals"
+#elif __cpp_unicode_literals != 200710
+# error "__cpp_unicode_literals != 200710"
+#endif
+
+#ifndef __cpp_user_defined_literals
+# error "__cpp_user_defined_literals"
+#elif __cpp_user_defined_literals != 200809
+# error "__cpp_user_defined_literals != 200809"
+#endif
+
+#ifndef __cpp_lambdas
+# error "__cpp_lambdas"
+#elif __cpp_lambdas != 200907
+# error "__cpp_lambdas != 200907"
+#endif
+
+#ifndef __cpp_constexpr
+# error "__cpp_constexpr"
+#elif __cpp_constexpr != 200704
+# error "__cpp_constexpr != 200704"
+#endif
+
+#ifndef __cpp_static_assert
+# error "__cpp_static_assert"
+#elif __cpp_static_assert != 200410
+# error "__cpp_static_assert != 200410"
+#endif
+
+#ifndef __cpp_decltype
+# error "__cpp_decltype"
+#elif __cpp_decltype != 200707
+# error "__cpp_decltype != 200707"
+#endif
+
+#ifndef __cpp_attributes
+# error "__cpp_attributes"
+#elif __cpp_attributes != 200809
+# error "__cpp_attributes != 200809"
+#endif
+
+#ifndef __cpp_rvalue_reference
+# error "__cpp_rvalue_reference"
+#elif __cpp_rvalue_reference != 200610
+# error "__cpp_rvalue_reference != 200610"
+#endif
+
+#ifndef __cpp_variadic_templates
+# error "__cpp_variadic_templates"
+#elif __cpp_variadic_templates != 200704
+# error "__cpp_variadic_templates != 200704"
+#endif
+
+#ifndef __cpp_alias_templates
+# error "__cpp_alias_templates"
+#elif __cpp_alias_templates != 200704
+# error "__cpp_alias_templates != 200704"
+#endif
+
+// Begin C++14 tests.
+
+#ifndef __cpp_binary_literals
+# error "__cpp_binary_literals"
+#elif __cpp_binary_literals != 201304
+# error "__cpp_binary_literals != 201304"
+#endif
+
+#ifndef __cpp_init_captures
+# error "__cpp_init_captures"
+#elif __cpp_init_captures != 201304
+# error "__cpp_init_captures != 201304"
+#endif
+
+#ifndef __cpp_generic_lambdas
+# error "__cpp_generic_lambdas"
+#elif __cpp_generic_lambdas != 201304
+# error "__cpp_generic_lambdas != 201304"
+#endif
+
+// TODO: Change 200704 to 201304 when C++14 constexpr goes in.
+#ifndef __cpp_constexpr
+# error "__cpp_constexpr"
+#elif __cpp_constexpr != 200704
+# error "__cpp_constexpr != 200704"
+#endif
+
+#ifndef __cpp_decltype_auto
+# error "__cpp_decltype_auto"
+#elif __cpp_decltype_auto != 201304
+# error "__cpp_decltype_auto != 201304"
+#endif
+
+#ifndef __cpp_return_type_deduction
+# error "__cpp_return_type_deduction"
+#elif __cpp_return_type_deduction != 201304
+# error "__cpp_return_type_deduction != 201304"
+#endif
+
+#ifndef __cpp_runtime_arrays
+# error "__cpp_runtime_arrays"
+#elif __cpp_runtime_arrays != 201304
+# error "__cpp_runtime_arrays != 201304"
+#endif
+
+// Aggregate initializers not in yet.
+#ifdef __cpp_aggregate_nsdmi
+# error "__cpp_aggregate_nsdmi"
+#endif
+
+#ifndef __cpp_variable_templates
+# error "__cpp_variable_templates"
+#elif __cpp_variable_templates != 201304
+# error "__cpp_variable_templates != 201304"
+#endif
+
+#ifndef __cpp_digit_separators
+# error "__cpp_digit_separators"
+#elif __cpp_digit_separators != 201309
+# error "__cpp_digit_separators != 201309"
+#endif
+
+#ifndef __cpp_attribute_deprecated
+# error "__cpp_attribute_deprecated"
+#elif __cpp_attribute_deprecated != 201309
+# error "__cpp_attribute_deprecated != 201309"
+#endif
+
+// Sized deallocation not in yet.
+#ifdef __cpp_sized_deallocation
+# error "__cpp_sized_deallocation"
+#endif
+
+// Begin include checks.
+
+// Check for __has_include macro.
+#ifndef __has_include
+# error "__has_include"
+#endif
+
+// Quoted complex.h should find at least the bracket version (use operator).
+#if __has_include__ "complex.h"
+#else
+# error "complex.h"
+#endif
+
+// Try known bracket header (use operator).
+#if __has_include__(<complex>)
+#else
+# error "<complex>"
+#endif
+
+// Define and use a macro to invoke the operator.
+#define sluggo(TXT) __has_include__(TXT)
+
+#if sluggo(<complex>)
+#else
+# error "<complex>"
+#endif
+
+#if ! sluggo(<complex>)
+# error "<complex>"
+#else
+#endif
+
+// Quoted complex.h should find at least the bracket version.
+#if __has_include("complex.h")
+#else
+# error "complex.h"
+#endif
+
+// Try known local quote header.
+#if __has_include("complex_literals.h")
+#else
+# error "\"complex_literals.h\""
+#endif
+
+// Try nonexistent bracket header.
+#if __has_include(<stuff>)
+# error "<stuff>"
+#else
+#endif
+
+// Try nonexistent quote header.
+#if __has_include("phlegm")
+# error "\"phlegm\""
+#else
+#endif
+
+// Test __has_include_next.
+#if __has_include("phoobhar.h")
+# include "phoobhar.h"
+#else
+# error "__has_include(\"phoobhar.h\")"
+#endif
+
+// Try a macro.
+#define COMPLEX_INC "complex.h"
+#if __has_include(COMPLEX_INC)
+#else
+# error COMPLEX_INC
+#endif
+
+// Realistic use of __has_include.
+#if __has_include(<array>)
+# define STD_ARRAY 1
+# include <array>
+ template<typename _Tp, size_t _Num>
+ using array = std::array<_Tp, _Num>;
+#elif __has_include(<tr1/array>)
+# define TR1_ARRAY 1
+# include <tr1/array>
+ template<typename _Tp, size_t _Num>
+ typedef std::tr1::array<_Tp, _Num> array;
+#endif
===================================================================
@@ -0,0 +1,15 @@
+// { dg-do compile { target c++98_only } }
+// { dg-options "" }
+
+// These C++14 features are allowed in C++98 in non-ANSI modes.
+#ifndef __cpp_binary_literals
+# error "__cpp_binary_literals"
+#elif __cpp_binary_literals != 201304
+# error "__cpp_binary_literals != 201304"
+#endif
+
+#ifndef __cpp_runtime_arrays
+# error "__cpp_runtime_arrays"
+#elif __cpp_runtime_arrays != 201304
+# error "__cpp_runtime_arrays != 201304"
+#endif
===================================================================
@@ -0,0 +1,10 @@
+// { dg-do compile { target c++98_only } }
+// { dg-options "-ansi" }
+
+#ifdef __cpp_binary_literals
+# error "__cpp_binary_literals" // { dg-error "error" }
+#endif
+
+#ifdef __cpp_runtime_arrays
+# error "__cpp_runtime_arrays" // { dg-error "error" }
+#endif
===================================================================
@@ -0,0 +1,16 @@
+
+int
+phoo();
+
+int
+bhar();
+
+#ifndef __has_include_next
+# error "__has_include_next"
+#else
+# if __has_include_next("phoobhar.h")
+# include_next "phoobhar.h"
+# else
+# error "__has_include_next(\"phoobhar.h\")"
+# endif
+#endif