MySQL 8.0.31 failed to be built with macports-clang-15 on macOS <= 10.12 Sierra

[laggardkernel (laggardkernel)]

Checking from port health, mysql 8.0.31 failed to be built on macOS <= 10.14 Mojave.

​https://ports.macports.org/port/mysql8/details/

Here's the error part extracted from the build log.

/opt/local/libexec/llvm-15/bin/../include/c++/v1/__algorithm/iterator_operations.h:100:5: error: static assertion failed due to requirement 'is_same<varlen_element, varlen_element &>::value': It looks like your iterator's `iterator_traits<It>::reference` does not match the return type of dereferencing the iterator, i.e., calling `*it`. This is undefined behavior according to [input.iterators] and can lead to dangling reference issues at runtime, so we are flagging this.
    static_assert(is_same<__deref_t<_Iter>, typename iterator_traits<__uncvref_t<_Iter> >::reference>::value,
    ^             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/local/libexec/llvm-15/bin/../include/c++/v1/__algorithm/iterator_operations.h:129:5: note: in instantiation of function template specialization 'std::_IterOps<std::_ClassicAlgPolicy>::__validate_iter_reference<varlen_iterator &>' requested here
    __validate_iter_reference<_Iter>();
    ^

[laggardkernel (laggardkernel)]

The package has been built successfully after upgrading mysql8 to 8.0.32. While I needed to change configure.compiler to macports-clang-14 to get the building passed with 8.0.31.

[chrstphrchvz (Christopher Chavez)]

Why was the title of this ticket was changed to “… <= 10.12 Sierra”? This port only supports 10.13 or later.

The varlen_sort.h error under LLVM clang 15 was indeed fixed in 8.0.32: ​https://github.com/mysql/mysql-server/commit/69fb953b5547. I believe this ticket can be closed.