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1b22fed46c
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 cad/kicad-devel to fail to compile with clang 19 and libc++
19, resulting in errors similar to:
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nanodbc/nanodbc/nanodbc.cpp:261:25: error: implicit instantiation of undefined template 'std::char_traits<unsigned short>'
261 | auto const n = std::char_traits<NANODBC_SQLCHAR>::length(array);
| ^
/usr/include/c++/v1/__string/char_traits.h:45:8: note: template is declared here
45 | struct char_traits;
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nanodbc/nanodbc/nanodbc.cpp:3576:52: error: implicit instantiation of undefined template 'std::char_traits<unsigned short>'
3576 | dsn.name = string(&name[0], &name[std::char_traits<NANODBC_SQLCHAR>::length(name)]);
| ^
/usr/include/c++/v1/__string/char_traits.h:45:8: note: template is declared here
45 | struct char_traits;
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nanodbc/nanodbc/nanodbc.cpp:3578:49: error: implicit instantiation of undefined template 'std::char_traits<unsigned short>'
3578 | string(&driver[0], &driver[std::char_traits<NANODBC_SQLCHAR>::length(driver)]);
| ^
/usr/include/c++/v1/__string/char_traits.h:45:8: note: template is declared here
45 | struct char_traits;
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nanodbc/nanodbc/nanodbc.cpp:3629:54: error: implicit instantiation of undefined template 'std::char_traits<unsigned short>'
3629 | drv.name = string(&descr[0], &descr[std::char_traits<NANODBC_SQLCHAR>::length(descr)]);
| ^
/usr/include/c++/v1/__string/char_traits.h:45:8: note: template is declared here
45 | struct char_traits;
| ^
and:
/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,
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/compoundfilereader/compoundfilereader.h:226:21: note: in instantiation of template class 'std::basic_string<unsigned short>' requested here
226 | utf16string dir;
| ^
/usr/include/c++/v1/__fwd/string.h:23:29: note: template is declared here
23 | struct _LIBCPP_TEMPLATE_VIS char_traits;
| ^
and:
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nlohmann_json/nlohmann/json.hpp:3604:22: error: implicit instantiation of undefined template 'std::char_traits<wxUniChar>'
3604 | struct char_traits : std::char_traits<T>
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nlohmann_json/nlohmann/json.hpp:6289:14: note: in instantiation of template class 'nlohmann::detail::char_traits<wxUniChar>' requested here
6289 | typename char_traits<char_type>::int_type get_character()
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nlohmann_json/nlohmann/json.hpp:6465:22: note: in instantiation of template class 'nlohmann::detail::iterator_input_adapter<wxString::const_iterator>' requested here
6465 | BaseInputAdapter base_adapter;
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/thirdparty/nlohmann_json/nlohmann/json.hpp:23323:16: note: in instantiation of template class 'nlohmann::detail::wide_string_input_adapter<nlohmann::detail::iterator_input_adapter<wxString::const_iterator>, wxUniChar>' requested here
23323 | parser(detail::input_adapter(std::forward<InputType>(i)), cb, allow_exceptions, ignore_comments).parse(true, result);
| ^
/wrkdirs/usr/ports/cad/kicad-devel/work/kicad-6ebd8f46fe24533214b9ed43f1f7e5a4b80dcc71/eeschema/sch_io/easyedapro/sch_io_easyedapro.cpp:209:53: note: in instantiation of function template specialization 'nlohmann::basic_json<>::parse<wxString>' requested here
209 | nlohmann::json js = nlohmann::json::parse( txt.ReadLine() );
| ^
/usr/include/c++/v1/__string/char_traits.h:45:8: note: template is declared here
45 | struct char_traits;
| ^
The first batch of errors can be fixed by providing a simple `length()`
function for the `NANODBC_SQLCHAR const*` type. The second batch can be
fixed by using `std::basic_string<char16_t>` for `utf16string`, and
adjusting the call to `std::basic_string<char16_t>::append`. The third
batch can be fixed by adding a `char_traits` definition specifically for
the `wxUniChar` type.
[1] https://libcxx.llvm.org/ReleaseNotes/19.html#deprecations-and-removals
PR: 282512
Approved by: maintainer timeout (2 weeks)
MFH: 2024Q4
44 lines
1.6 KiB
C++
44 lines
1.6 KiB
C++
--- thirdparty/nanodbc/nanodbc/nanodbc.cpp.orig 2024-10-11 09:03:05 UTC
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+++ thirdparty/nanodbc/nanodbc/nanodbc.cpp
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@@ -255,10 +255,19 @@ constexpr std::size_t size(const T (&array)[N]) noexce
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}
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#endif
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+inline std::size_t length(NANODBC_SQLCHAR const* s)
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+{
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+ std::size_t len = 0;
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+ for (; *s != 0; ++s)
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+ ++len;
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+ return len;
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+
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+}
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+
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template <std::size_t N>
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inline std::size_t size(NANODBC_SQLCHAR const (&array)[N]) noexcept
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{
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- auto const n = std::char_traits<NANODBC_SQLCHAR>::length(array);
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+ auto const n = length(array);
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NANODBC_ASSERT(n < N);
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return n < N ? n : N - 1;
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}
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@@ -3589,9 +3598,9 @@ std::list<datasource> list_datasources()
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"incompatible SQLCHAR and string::value_type");
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datasource dsn;
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- dsn.name = string(&name[0], &name[std::char_traits<NANODBC_SQLCHAR>::length(name)]);
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+ dsn.name = string(&name[0], &name[length(name)]);
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dsn.driver =
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- string(&driver[0], &driver[std::char_traits<NANODBC_SQLCHAR>::length(driver)]);
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+ string(&driver[0], &driver[length(driver)]);
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dsns.push_back(std::move(dsn));
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direction = SQL_FETCH_NEXT;
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@@ -3642,7 +3651,7 @@ std::list<driver> list_drivers()
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"incompatible SQLCHAR and string::value_type");
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driver drv;
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- drv.name = string(&descr[0], &descr[std::char_traits<NANODBC_SQLCHAR>::length(descr)]);
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+ drv.name = string(&descr[0], &descr[length(descr)]);
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// Split "Key1=Value1\0Key2=Value2\0\0" into list of key-value pairs
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auto beg = &attrs[0];
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