P0482R5 char8_t: Updates to existing standard library tests

This patch augments existing tests to validate behavior for char8_t.  In
all cases, added test cases are cloned from existing tests for wchar_t
or char16_t.

A few tests required updates to line numbers for diagnostic messages.

2019-02-22  Tom Honermann  <tom@honermann.net>

	* testsuite/18_support/byte/ops.cc: Validate
	std::to_integer<char8_t>, std::to_integer<char16_t>, and
	std::to_integer<char32_t>.
	* testsuite/18_support/numeric_limits/dr559.cc: Validate
	std::numeric_limits<char8_t>.
	* testsuite/18_support/numeric_limits/lowest.cc: Validate
	std::numeric_limits<char8_t>::lowest().
	* testsuite/18_support/numeric_limits/max_digits10.cc: Validate
	std::numeric_limits<char8_t>::max_digits10.
	* testsuite/18_support/type_info/fundamental.cc: Validate
	typeinfo for char8_t.
	* testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
	std::from_chars with char8_t.
	* testsuite/20_util/hash/requirements/explicit_instantiation.cc:
	Validate explicit instantiation of std::hash<char8_t>.
	* testsuite/20_util/is_integral/value.cc: Validate
	std::is_integral<char8_t>.
	* testsuite/20_util/make_signed/requirements/typedefs-4.cc:
	Validate std::make_signed<char8_t>.
	* testsuite/21_strings/basic_string/cons/char/deduction.cc:
	Validate u8string construction from char8_t sources.
	* testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
	std::pmr::u8string.
	* testsuite/21_strings/basic_string_view/operations/compare/
	char/70483.cc: Validate substr operations on u8string_view.
	* testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
	the u8string_view typedef is defined.
	* testsuite/21_strings/char_traits/requirements/
	constexpr_functions.cc: Validate char_traits<char8_t> constexpr
	member functions.
	* testsuite/21_strings/char_traits/requirements/
	constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
	constexpr member functions.
	* testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
	that the u8string typedef is defined.
	* testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
	of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
	std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
	* testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
	numbers.
	* testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
	* testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
	Likewise.
	* testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
	* testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
	Validate std::atomic<char8_t>::is_always_lock_free
	* testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
	Update line numbers.
	* testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
	Likewise.
	* testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
	Likewise.
	* testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
	Validate std::experimental::pmr::u8string.
	* testsuite/experimental/string_view/typedefs.cc: Validate that the
	u8string_view typedef is defined.
	* testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
	char32_t to the typelists.

From-SVN: r269089

1 files changed, 6 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc b/libstdc++-v3/testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc
index 757922177bd..62917e9373d 100644
--- a/libstdc++-v3/testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc
+++ b/libstdc++-v3/testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc
@@ -36,6 +36,12 @@ static_assert(std::is_same<xpmr::string,
     std::basic_string<char, std::char_traits<char>,
 		      xpmr::polymorphic_allocator<char>>>::value,
     "pmr::string");
+#ifdef _GLIBCXX_USE_CHAR8_T
+static_assert(std::is_same<xpmr::u8string,
+    std::basic_string<char8_t, std::char_traits<char8_t>,
+		      xpmr::polymorphic_allocator<char8_t>>>::value,
+    "pmr::u8string");
+#endif
 static_assert(std::is_same<xpmr::u16string,
     std::basic_string<char16_t, std::char_traits<char16_t>,
 		      xpmr::polymorphic_allocator<char16_t>>>::value,