libstdc++: Remove unnecessary uses of _GLIBCXX_USE_WCHAR_T in testsuite [PR98725]

Now that std::wstring and other specializations for wchar_t are defined
unconditionally, many checks for _GLIBCXX_USE_WCHAR_T in the testsuite
are unnecessary and can be removed. Tests for iostreams, locales, regex
and filesystem::path still need to be guarded by _GLIBCXX_USE_WCHAR_T
because those components depend on libc support in <wchar.h> and other
headers.

libstdc++-v3/ChangeLog:

	PR libstdc++/98725
	* testsuite/18_support/numeric_limits/lowest.cc: Remove use of
	_GLIBCXX_USE_WCHAR_T.
	* testsuite/18_support/numeric_limits/min_max.cc: Replace use of
	_GLIBCXX_USE_WCHAR_T with checks for WCHAR_MIN and WCHAR_MAX.
	* testsuite/20_util/from_chars/1_neg.cc: Remove use of
	_GLIBCXX_USE_WCHAR_T.
	* testsuite/20_util/function_objects/searchers.cc: Likewise. Use
	char_traits<wchar_t>::length instead of wcslen.
	* testsuite/20_util/hash/requirements/explicit_instantiation.cc:
	Likewise.
	* testsuite/20_util/is_arithmetic/value.cc: Likewise.
	* testsuite/20_util/is_compound/value.cc: Likewise.
	* testsuite/20_util/is_floating_point/value.cc: Likewise.
	* testsuite/20_util/is_fundamental/value.cc: Likewise.
	* testsuite/20_util/is_integral/value.cc: Likewise.
	* testsuite/20_util/is_signed/value.cc: Likewise.
	* testsuite/20_util/is_unsigned/value.cc: Likewise.
	* testsuite/20_util/is_void/value.cc: Likewise.
	* testsuite/20_util/make_signed/requirements/typedefs-1.cc:
	Likewise.
	* testsuite/20_util/make_signed/requirements/typedefs-2.cc:
	Likewise.
	* testsuite/20_util/make_signed/requirements/typedefs-3.cc:
	Likewise.
	* testsuite/20_util/make_signed/requirements/typedefs-4.cc:
	Likewise.
	* testsuite/20_util/make_unsigned/requirements/typedefs-1.cc:
	Likewise.
	* testsuite/20_util/make_unsigned/requirements/typedefs-2.cc:
	Likewise.
	* testsuite/20_util/make_unsigned/requirements/typedefs-3.cc:
	Likewise.
	* testsuite/20_util/to_chars/3.cc: Likewise.
	* testsuite/20_util/type_identity/requirements/typedefs.cc:
	Likewise.
	* testsuite/21_strings/basic_string/hash/debug.cc: Likewise.
	* testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
	* testsuite/21_strings/basic_string/literals/types-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string/literals/types.cc: Likewise.
	* testsuite/21_strings/basic_string/literals/values-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string/literals/values.cc:
	Likewise.
	* testsuite/21_strings/basic_string/modifiers/64422.cc:
	Likewise.
	* testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string/requirements/citerators.cc:
	Likewise.
	* testsuite/21_strings/basic_string/requirements/typedefs.cc:
	Likewise.
	* testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/types.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/literals/values.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
	Likewise.
	* testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
	* testsuite/21_strings/char_traits/requirements/constexpr_functions.cc:
	Likewise.
	* testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
	Likewise.
	* testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
	Likewise.
	* testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
	* testsuite/25_algorithms/fill/4.cc: Likewise.
	* testsuite/25_algorithms/fill_n/1.cc: Likewise.
	* testsuite/experimental/functional/searchers.cc: Likewise. Use
	char_traits<wchar_t>::length instead of wcslen.
	* testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
	Likewise.
	* testsuite/experimental/string_view/literals/types-char8_t.cc:
	Likewise.
	* testsuite/experimental/string_view/literals/types.cc:
	Likewise.
	* testsuite/experimental/string_view/literals/values-char8_t.cc:
	Likewise.
	* testsuite/experimental/string_view/literals/values.cc:
	Likewise.
	* testsuite/experimental/string_view/range_access/wchar_t/1.cc:
	Likewise.
	* testsuite/experimental/string_view/requirements/typedefs.cc:
	Likewise.
	* testsuite/experimental/string_view/typedefs.cc: Likewise.
	* testsuite/ext/vstring/range_access.cc: Likewise.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
	Likewise.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc:
	Likewise.
	* testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_arithmetic/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_compound/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_floating_point/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_fundamental/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_integral/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_signed/value.cc: Likewise.
	* testsuite/tr1/4_metaprogramming/is_unsigned/value.cc:
	Likewise.
	* testsuite/tr1/4_metaprogramming/is_void/value.cc: Likewise.
	* testsuite/tr1/6_containers/hash/24799.cc: Likewise.

2 files changed, 2 insertions, 6 deletions

diff --git a/libstdc++-v3/testsuite/25_algorithms/fill/4.cc b/libstdc++-v3/testsuite/25_algorithms/fill/4.cc
index 5c761c46b9c..1b2402d36cb 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill/4.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill/4.cc
@@ -30,7 +30,7 @@ test01()
 
   const int A1[] = {3, 3, 3, 3, 3, 3, 3, 3, 3, 3};
   const int N1 = sizeof(A1) / sizeof(int);
-  
+
   int i1[N1];
   fill(i1, i1 + N1, 3);
   VERIFY( equal(i1, i1 + N1, A1) );
@@ -51,7 +51,6 @@ test01()
   fill(v2.begin(), v2.end(), '\3');
   VERIFY( equal(v2.begin(), v2.end(), A2) );
 
-#ifdef _GLIBCXX_USE_WCHAR_T
   const wchar_t A3[] = {L'\3', L'\3', L'\3', L'\3', L'\3',
 			L'\3', L'\3', L'\3', L'\3', L'\3'};
   const int N3 = sizeof(A3) / sizeof(wchar_t);
@@ -63,7 +62,6 @@ test01()
   vector<wchar_t> v3(N3);
   fill(v3.begin(), v3.end(), L'\3');
   VERIFY( equal(v3.begin(), v3.end(), A3) );
-#endif
 }
 
 int
diff --git a/libstdc++-v3/testsuite/25_algorithms/fill_n/1.cc b/libstdc++-v3/testsuite/25_algorithms/fill_n/1.cc
index 744856b06c0..893aa5b4ebf 100644
--- a/libstdc++-v3/testsuite/25_algorithms/fill_n/1.cc
+++ b/libstdc++-v3/testsuite/25_algorithms/fill_n/1.cc
@@ -44,7 +44,7 @@ test01()
 
   const int A1[] = {3, 3, 3, 3, 3, 3, 3, 3, 3, 3};
   const int N1 = sizeof(A1) / sizeof(int);
-  
+
   int i1[N1];
   test_container<int, output_iterator_wrapper> c1(i1, i1 + N1);
   fill_n(c1.begin(), N1, 3);
@@ -66,7 +66,6 @@ test01()
   fill_n(v2.begin(), N2, '\3');
   VERIFY( equal(v2.begin(), v2.end(), A2) );
 
-#ifdef _GLIBCXX_USE_WCHAR_T
   const wchar_t A3[] = {L'\3', L'\3', L'\3', L'\3', L'\3',
 			L'\3', L'\3', L'\3', L'\3', L'\3'};
   const int N3 = sizeof(A3) / sizeof(wchar_t);
@@ -78,7 +77,6 @@ test01()
   vector<wchar_t> v3(N3);
   fill_n(v3.begin(), N3, L'\3');
   VERIFY( equal(v3.begin(), v3.end(), A3) );
-#endif
 }
 
 int