[libc++] Make everything in namespace std have default type visibility and hidden visibility and remove _LIBCPP_ENUM_VIS

This avoids having to add `_LIBCPP_ENUM_VIS`, since that is handled through `type_visibility` and GCC always makes the visibility of enums default. It also fixes and missing `_LIBCPP_EXPORTED_FROM_ABI` on classes when using Clang.

Reviewed By: ldionne, #libc

Spies: libcxx-commits

Differential Revision: https://reviews.llvm.org/D153658

3 files changed, 5 insertions, 5 deletions

diff --git a/libcxx/include/__format/format_arg.h b/libcxx/include/__format/format_arg.h
index 5cbfe81..ca06107 100644
--- a/libcxx/include/__format/format_arg.h
+++ b/libcxx/include/__format/format_arg.h
@@ -53,7 +53,7 @@ namespace __format {
 /// handle to satisfy the user observable behaviour. The internal function
 /// __visit_format_arg doesn't do this wrapping. So in the format functions
 /// this function is used to avoid unneeded overhead.
-enum class _LIBCPP_ENUM_VIS __arg_t : uint8_t {
+enum class __arg_t : uint8_t {
   __none,
   __boolean,
   __char_type,
diff --git a/libcxx/include/__format/parser_std_format_spec.h b/libcxx/include/__format/parser_std_format_spec.h
index c01e586..e79fc8f 100644
--- a/libcxx/include/__format/parser_std_format_spec.h
+++ b/libcxx/include/__format/parser_std_format_spec.h
@@ -176,7 +176,7 @@ inline constexpr __fields __fields_range{.__use_range_fill_ = true, .__clear_bra
 inline constexpr __fields __fields_fill_align_width{};
 #  endif
 
-enum class _LIBCPP_ENUM_VIS __alignment : uint8_t {
+enum class __alignment : uint8_t {
   /// No alignment is set in the format string.
   __default,
   __left,
@@ -185,7 +185,7 @@ enum class _LIBCPP_ENUM_VIS __alignment : uint8_t {
   __zero_padding
 };
 
-enum class _LIBCPP_ENUM_VIS __sign : uint8_t {
+enum class __sign : uint8_t {
   /// No sign is set in the format string.
   ///
   /// The sign isn't allowed for certain format-types. By using this value
@@ -197,7 +197,7 @@ enum class _LIBCPP_ENUM_VIS __sign : uint8_t {
   __space
 };
 
-enum class _LIBCPP_ENUM_VIS __type : uint8_t {
+enum class __type : uint8_t {
   __default = 0,
   __string,
   __binary_lower_case,
diff --git a/libcxx/include/__format/write_escaped.h b/libcxx/include/__format/write_escaped.h
index 8c51d0b..e415fc5 100644
--- a/libcxx/include/__format/write_escaped.h
+++ b/libcxx/include/__format/write_escaped.h
@@ -118,7 +118,7 @@ template <class _CharT>
   return static_cast<make_unsigned_t<_CharT>>(__value);
 }
 
-enum class _LIBCPP_ENUM_VIS __escape_quotation_mark { __apostrophe, __double_quote };
+enum class __escape_quotation_mark { __apostrophe, __double_quote };
 
 // [format.string.escaped]/2
 template <class _CharT>