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1c818faba7
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 science/dlib-cpp to fail to compile with clang 19 and libc++
19, resulting in errors similar to:
/usr/include/c++/v1/string:820:42: error: implicit instantiation of undefined template 'std::char_traits<unsigned int>'
820 | static_assert(is_same<_CharT, typename traits_type::char_type>::value,
| ^
/wrkdirs/usr/ports/science/dlib-cpp/work/dlib-19.24.6/dlib/bigint/../unicode/unicode.h:718:19: note: in instantiation of template class 'std::basic_string<unsigned int>' requested here
718 | const ustring convert_to_utf32 (
| ^
/usr/include/c++/v1/__fwd/string.h:23:29: note: template is declared here
23 | struct _LIBCPP_TEMPLATE_VIS char_traits;
| ^
This can be fixed by defining `unichar` as `char32_t` instead of
`uint32` in `unicode.h`, and adding a serializer for `char32_t` to
`serialize.h`.
[1] https://libcxx.llvm.org/ReleaseNotes/19.html#deprecations-and-removals
PR: 282665
Approved by: arrowd (maintainer)
MFH: 2024Q4
11 lines
338 B
C
11 lines
338 B
C
--- dlib/serialize.h.orig 2024-02-17 21:44:22 UTC
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+++ dlib/serialize.h
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@@ -639,6 +639,8 @@ namespace dlib
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USE_DEFAULT_INT_SERIALIZATION_FOR(wchar_t)
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#endif
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+ USE_DEFAULT_INT_SERIALIZATION_FOR(char32_t)
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+
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// ----------------------------------------------------------------------------------------
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inline void serialize(
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