Disable tests that only pass for GNU dialects

The airy and hypergeometric functions are non-standard extensions and
are only defined for -std=gnu++NN dialects, not -std=c++NN ones.

	* ext/special_functions/airy_ai/check_nan.cc: Skip test for
	non-standard extension when a strict -std=c++NN dialect is used.
	* ext/special_functions/airy_ai/check_value.cc: Likewise.
	* ext/special_functions/airy_ai/compile.cc: Likewise.
	* ext/special_functions/airy_bi/check_nan.cc: Likewise.
	* ext/special_functions/airy_bi/check_value.cc: Likewise.
	* ext/special_functions/airy_bi/compile.cc: Likewise.
	* ext/special_functions/conf_hyperg/check_nan.cc: Likewise.
	* ext/special_functions/conf_hyperg/check_value.cc: Likewise.
	* ext/special_functions/conf_hyperg/compile.cc: Likewise.
	* ext/special_functions/hyperg/check_nan.cc: Likewise.
	* ext/special_functions/hyperg/check_value.cc: Likewise.
	* ext/special_functions/hyperg/compile.cc: Likewise.

From-SVN: r265330

libstdc++-v3/ChangeLog

 2018-10-19  Jonathan Wakely  <jwakely@redhat.com>
 
+	* ext/special_functions/airy_ai/check_nan.cc: Skip test for
+	non-standard extension when a strict -std=c++NN dialect is used.
+	* ext/special_functions/airy_ai/check_value.cc: Likewise.
+	* ext/special_functions/airy_ai/compile.cc: Likewise.
+	* ext/special_functions/airy_bi/check_nan.cc: Likewise.
+	* ext/special_functions/airy_bi/check_value.cc: Likewise.
+	* ext/special_functions/airy_bi/compile.cc: Likewise.
+	* ext/special_functions/conf_hyperg/check_nan.cc: Likewise.
+	* ext/special_functions/conf_hyperg/check_value.cc: Likewise.
+	* ext/special_functions/conf_hyperg/compile.cc: Likewise.
+	* ext/special_functions/hyperg/check_nan.cc: Likewise.
+	* ext/special_functions/hyperg/check_value.cc: Likewise.
+	* ext/special_functions/hyperg/compile.cc: Likewise.
+
 	* testsuite/23_containers/list/requirements/explicit_instantiation/
 	5_c++0x.cc: Remove redundant test that is functionally identical to
 	the 5.cc test.

libstdc++-v3/testsuite/ext/special_functions/airy_ai/check_nan.cc

@@ -2,6 +2,7 @@
 // { dg-require-c-std "" }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
 // { dg-add-options ieee }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/airy_ai/check_value.cc

 // { dg-do run { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 //
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/airy_ai/compile.cc

 // { dg-do compile { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/airy_bi/check_nan.cc

@@ -2,6 +2,7 @@
 // { dg-require-c-std "" }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
 // { dg-add-options ieee }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/airy_bi/check_value.cc

 // { dg-do run { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 //
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/airy_bi/compile.cc

 // { dg-do compile { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/conf_hyperg/check_nan.cc

@@ -2,6 +2,7 @@
 // { dg-require-c-std "" }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
 // { dg-add-options ieee }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/conf_hyperg/check_value.cc

 // { dg-do run { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 //
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/conf_hyperg/compile.cc

 // { dg-do compile { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/hyperg/check_nan.cc

@@ -2,6 +2,7 @@
 // { dg-require-c-std "" }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
 // { dg-add-options ieee }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/hyperg/check_value.cc

 // { dg-do run { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__ -ffp-contract=off" }
 // { dg-additional-options "-ffloat-store" { target { m68*-*-* || ia32 } } }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 //
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //

libstdc++-v3/testsuite/ext/special_functions/hyperg/compile.cc

 // { dg-do compile { target c++11 } }
 // { dg-options "-D__STDCPP_WANT_MATH_SPEC_FUNCS__" }
+// { dg-skip-if "no extensions in strict dialects" { *-*-* } { "-std=c++*" } }
 
 // Copyright (C) 2016-2018 Free Software Foundation, Inc.
 //