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 www/node20 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 short>' 820 | static_assert(is_same<_CharT, typename traits_type::char_type>::value, | ^ ../deps/v8/src/inspector/string-16.h:114:28: note: in instantiation of template class 'std::basic_string<unsigned short>' requested here 114 | std::basic_string<UChar> m_impl; | ^ /usr/include/c++/v1/__fwd/string.h:23:29: note: template is declared here 23 | struct _LIBCPP_TEMPLATE_VIS char_traits; | ^ Upstream v8 has fixed this in commit 182d9c05e78 [2], so add it as a backported patch, until the next version of node is released. [1] https://libcxx.llvm.org/ReleaseNotes/19.html#deprecations-and-removals [2] https://chromium.googlesource.com/v8/v8.git/+/182d9c05e78
Created attachment 252593 [details] www/node20: fix build with libc++ 19
A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/ports/commit/?id=f832d50a9e7c59a3a0ce400cadb49b2e72241f6e commit f832d50a9e7c59a3a0ce400cadb49b2e72241f6e Author: Dimitry Andric <dim@FreeBSD.org> AuthorDate: 2024-08-15 09:47:21 +0000 Commit: Po-Chuan Hsieh <sunpoet@FreeBSD.org> CommitDate: 2024-08-15 11:53:54 +0000 www/node20: Fix build with libc++ 19 PR: 280673 Obtained from: https://chromium.googlesource.com/v8/v8.git/+/182d9c05e78b1ddb1cb8242cd3628a7855a0336f www/node20/files/patch-libc++19 (new) | 185 ++++++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+)
Committed. Thanks!