x11-toolkits/mygui: fix build with libc++ 19

As noted in the libc++ 19 release notes [1], std::char_traits<> is now
only provided for char, char8_t, char16_t, char32_t and wchar_t, and any
instantiation for other types will fail.

This causes x11-toolkits/mygui to fail to compile with clang 19 and
libc++ 19, resulting in errors similar to:

  In file included from /wrkdirs/usr/ports/x11-toolkits/mygui/work/mygui-MyGUI3.4.2/MyGUIEngine/include/MyGUI_Common.h:12:
  /usr/include/c++/v1/string:820:42: error: implicit instantiation of undefined template 'std::char_traits<unsigned short>'
    820 |   static_assert(is_same<_CharT, typename traits_type::char_type>::value,
   y     |                                          ^
  /wrkdirs/usr/ports/x11-toolkits/mygui/work/mygui-MyGUI3.4.2/MyGUIEngine/include/MyGUI_UString.h:213:4: note: in instantiation of template class 'std::basic_string<unsigned short>' requested here
    213 |                         dstring::iterator mIter;
        |                         ^
  /usr/include/c++/v1/__fwd/string.h:23:29: note: template is declared here
     23 | struct _LIBCPP_TEMPLATE_VIS char_traits;
        |                             ^

These can be fixed by using `char16_t` instead of `uint16_t` for the
`code_point` type, and `char32_t` instead of `uint32_t` for the
`unicode_char` type.

[1] https://libcxx.llvm.org/ReleaseNotes/19.html#deprecations-and-removals

PR:		281974
Approved by:	maintainer timeout (2 weeks)
MFH:		2024Q4
This commit is contained in:
Dimitry Andric 2024-10-08 11:08:59 +02:00
parent ae45f284b4
commit 2e294149c6

View file

@ -0,0 +1,15 @@
--- MyGUIEngine/include/MyGUI_UString.h.orig 2023-05-09 09:46:12 UTC
+++ MyGUIEngine/include/MyGUI_UString.h
@@ -164,10 +164,10 @@ namespace MyGUI
static const size_type npos = static_cast<size_type>(~0);
//! a single 32-bit Unicode character
- using unicode_char = uint32;
+ using unicode_char = char32_t;
//! a single UTF-16 code point
- using code_point = uint16;
+ using code_point = char16_t;
//! value type typedef for use in iterators
using value_type = code_point;