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daily_file_sink.h compilation error
Hi! Im encountered a compilation error (spdlog == 1.15.3) on MacOs with clang:
Homebrew clang version 20.1.6
Target: arm64-apple-darwin23.6.0
Thread model: posix
InstalledDir: /opt/homebrew/Cellar/llvm/20.1.6/bin
Configuration file: /opt/homebrew/etc/clang/arm64-apple-darwin23.cfg
Compilation errors:
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/spdlog/sinks/daily_file_sink.h:34:32: error: call to consteval function 'fmt::basic_format_string<char, std::string &, int, int, const int &, std::string &>::basic_format_string<FMT_COMPILE_STRING, 0>' is not a constant expression
[build] 34 | return fmt_lib::format(SPDLOG_FMT_STRING(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}")),
[build] | ^
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/spdlog/common.h:55:46: note: expanded from macro 'SPDLOG_FMT_STRING'
[build] 55 | #define SPDLOG_FMT_STRING(format_string) FMT_STRING(format_string)
[build] | ^
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/format.h:1827:23: note: expanded from macro 'FMT_STRING'
[build] 1827 | #define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::detail::compile_string, )
[build] | ^
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/format.h:1806:3: note: expanded from macro 'FMT_STRING_IMPL'
[build] 1806 | [] { \
[build] | ^
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:779:54: note: subexpression not valid in a constant expression
[build] 779 | format_str_.remove_prefix(detail::to_unsigned(it - begin()));
[build] | ~~~^~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:2761:5: note: in call to 'this->context_.advance_to(&"{}_{:04d}-{:02d}-{:02d}{}"[1])'
[build] 2761 | context_.advance_to(begin);
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:2756:5: note: in call to 'this->on_format_specs(0, &"{}_{:04d}-{:02d}-{:02d}{}"[1], &"{}_{:04d}-{:02d}-{:02d}{}"[1])'
[build] 2756 | on_format_specs(id, begin, begin); // Call parse() on empty specs.
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:2581:5: note: in call to 'handler.on_replacement_field(0, &"{}_{:04d}-{:02d}-{:02d}{}"[1])'
[build] 2581 | handler.on_replacement_field(handler.on_arg_id(), begin);
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:2613:21: note: in call to 'parse_replacement_field<char, fmt::detail::format_string_checker<char, std::string, int, int, int, std::string> &>(&"{}_{:04d}-{:02d}-{:02d}{}"[1], &"{}_{:04d}-{:02d}-{:02d}{}"[25], checker(s))'
[build] 2613 | begin = p = parse_replacement_field(p - 1, end, handler);
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/base.h:2884:7: note: in call to 'parse_format_string<true, char, fmt::detail::format_string_checker<char, std::string, int, int, int, std::string>>({&"{}_{:04d}-{:02d}-{:02d}{}"[0], 25}, checker(s))'
[build] 2884 | detail::parse_format_string<true>(str_, checker(s));
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/spdlog/sinks/daily_file_sink.h:34:32: note: in call to 'basic_format_string<FMT_COMPILE_STRING, 0>([] {
[build] struct __attribute__((visibility("hidden"))) FMT_COMPILE_STRING : fmt::detail::compile_string {
[build] using char_type [[maybe_unused]] = fmt::remove_cvref_t<decltype("{}_{:04d}-{:02d}-{:02d}{}"[0])>;
[build] [[maybe_unused]] constexpr operator fmt::basic_string_view<char_type>() const {
[build] return fmt::detail_exported::compile_string_to_view<char_type>("{}_{:04d}-{:02d}-{:02d}{}");
[build] }
[build] };
[build] return FMT_COMPILE_STRING();
[build] }())'
[build] 34 | return fmt_lib::format(SPDLOG_FMT_STRING(SPDLOG_FILENAME_T("{}_{:04d}-{:02d}-{:02d}{}")),
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/spdlog/common.h:55:46: note: expanded from macro 'SPDLOG_FMT_STRING'
[build] 55 | #define SPDLOG_FMT_STRING(format_string) FMT_STRING(format_string)
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/format.h:1827:23: note: expanded from macro 'FMT_STRING'
[build] 1827 | #define FMT_STRING(s) FMT_STRING_IMPL(s, fmt::detail::compile_string, )
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] /Users/apugachev/work/repos/my/vpn-telegram-bot/build/vcpkg_installed/arm64-osx/include/fmt/format.h:1806:3: note: expanded from macro 'FMT_STRING_IMPL'
[build] 1806 | [] { \
[build] | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1807 | /* Use the hidden visibility as a workaround for a GCC bug (#1973). */ \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1808 | /* Use a macro-like name to avoid shadowing warnings. */ \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1809 | struct FMT_VISIBILITY("hidden") FMT_COMPILE_STRING : base { \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1810 | using char_type FMT_MAYBE_UNUSED = fmt::remove_cvref_t<decltype(s[0])>; \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1811 | FMT_MAYBE_UNUSED FMT_CONSTEXPR explicit \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1812 | operator fmt::basic_string_view<char_type>() const { \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1813 | return fmt::detail_exported::compile_string_to_view<char_type>(s); \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1814 | } \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1815 | }; \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1816 | return FMT_COMPILE_STRING(); \
[build] | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[build] 1817 | }()
[build] | ~~~
[build] 1 error generated.
But with AppleClang 16.0.0 it compiles well.
It appears that vcpkg does not provide the latest fmt (v12):microsoft/vcpkg#45357 I think this problem will be solved when vcpkg releases the fmt v12.
Just for the sake of information: worked fine on Arch's clang 19 with vcpkg, probably related to changes in clang 20
Thanks @tt4g!
Looks like they're struggling with v11 for a while already: https://github.com/microsoft/vcpkg/pull/45295