These #ifdef checks should have been removed in
r9-2029-g612c9c702e2c9e
when the u16string_view and u32string_view aliases were changed to be
defined unconditionally.
libstdc++-v3/ChangeLog:
* testsuite/21_strings/basic_string_view/typedefs.cc: Remove
dependency on _GLIBCXX_USE_C99_STDINT_TR1.
* testsuite/experimental/string_view/typedefs.cc: Likewise.
using check3_t = std::u8string_view;
#endif
-#ifdef _GLIBCXX_USE_C99_STDINT_TR1
using check4_t = std::u16string_view;
using check5_t = std::u32string_view;
-#endif
using check6_t = std::wstring_view;
using check3_t = std::experimental::fundamentals_v1::u8string_view;
#endif
-#ifdef _GLIBCXX_USE_C99_STDINT_TR1
using check4_t = std::experimental::fundamentals_v1::u16string_view;
using check5_t = std::experimental::fundamentals_v1::u32string_view;
-#endif
using check6_t = std::experimental::fundamentals_v1::wstring_view;