This appears to be an ABI break(?) or at least difference between fmt 11.0.2 and 11.1.0.
Feel free to close this if it's entirely homebrew's fault though :)
With older homebrew's build of 11.0.2, this issue does not reproduce.
However, on current latest versions, I see the following behavior:
ccache --version: 👍ccahe --help : 💥
Here's the brew issue I opened: https://github.com/orgs/Homebrew/discussions/5830
And the backtrace:
$ lldb ccache
(lldb) target create "ccache"
Current executable set to '/opt/homebrew/bin/ccache' (arm64).
(lldb) run --help
Process 85982 launched: '/opt/homebrew/bin/ccache' (arm64)
Process 85982 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x8)
frame #0: 0x000000010000e350 ccache`fmt::v11::basic_appender<char> fmt::v11::detail::write_padded<char, (fmt::v11::align::type)1, fmt::v11::basic_appender<char>, fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&)::'lambda'(fmt::v11::basic_appender<char>)>(fmt::v11::basic_appender<char>, fmt::v11::format_specs const&, unsigned long, unsigned long, fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&)::'lambda'(fmt::v11::basic_appender<char>)&&) + 64
ccache`fmt::v11::detail::write_padded<char, (fmt::v11::align::type)1, fmt::v11::basic_appender<char>, fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&)::'lambda'(fmt::v11::basic_appender<char>)>:
-> 0x10000e350 <+64>: ldp x8, x9, [x0, #0x8]
0x10000e354 <+68>: add x8, x8, x2
0x10000e358 <+72>: add x21, x1, #0xb
0x10000e35c <+76>: ldrb w10, [x1, #0xf]
Target 0: (ccache) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x8)
* frame #0: 0x000000010000e350 ccache`fmt::v11::basic_appender<char> fmt::v11::detail::write_padded<char, (fmt::v11::align::type)1, fmt::v11::basic_appender<char>, fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&)::'lambda'(fmt::v11::basic_appender<char>)>(fmt::v11::basic_appender<char>, fmt::v11::format_specs const&, unsigned long, unsigned long, fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&)::'lambda'(fmt::v11::basic_appender<char>)&&) + 64
frame #1: 0x000000010000e274 ccache`fmt::v11::basic_appender<char> fmt::v11::detail::write<char, fmt::v11::basic_appender<char>>(fmt::v11::basic_appender<char>, fmt::v11::basic_string_view<char>, fmt::v11::format_specs const&) + 232
frame #2: 0x000000010000d7a8 ccache`auto fmt::v11::formatter<std::__1::__fs::filesystem::path, char, void>::format<fmt::v11::context>(std::__1::__fs::filesystem::path const&, fmt::v11::context&) const + 108
frame #3: 0x000000010000d6fc ccache`void fmt::v11::detail::value<fmt::v11::context>::format_custom_arg<std::__1::__fs::filesystem::path, fmt::v11::formatter<std::__1::__fs::filesystem::path, char, void>>(void*, fmt::v11::basic_format_parse_context<char>&, fmt::v11::context&) + 112
frame #4: 0x000000010018b39c libfmt.11.dylib`void fmt::v11::detail::parse_format_string<char, fmt::v11::detail::format_handler<char>>(fmt::v11::basic_string_view<char>, fmt::v11::detail::format_handler<char>&&) + 1264
frame #5: 0x000000010018ac64 libfmt.11.dylib`fmt::v11::detail::vformat_to(fmt::v11::detail::buffer<char>&, fmt::v11::basic_string_view<char>, fmt::v11::basic_format_args<fmt::v11::context>, fmt::v11::detail::locale_ref) + 76
frame #6: 0x000000010018b62c libfmt.11.dylib`fmt::v11::vprint(__sFILE*, fmt::v11::basic_string_view<char>, fmt::v11::basic_format_args<fmt::v11::context>) + 84
frame #7: 0x000000010004be88 ccache`core::process_main_options(int, char const* const*) + 4116
frame #8: 0x0000000100021a9c ccache`ccache_main(int, char const* const*) + 144
frame #9: 0x0000000195210274 dyld`start + 2840
This appears to be an issue upgrading from 11.0.2 to 11.1.0, which feels unexpected from fmtlib's perspective.
fmt info
$ brew info fmt
==> fmt: stable 11.1.0 (bottled), HEAD
Open-source formatting library for C++
https://fmt.dev/
Installed
/opt/homebrew/Cellar/fmt/11.1.0 (29 files, 1MB) *
Poured from bottle using the formulae.brew.sh API on 2024-12-26 at 09:32:49
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/f/fmt.rb
License: MIT
==> Dependencies
Build: cmake ✔
==> Options
--HEAD
Install HEAD version
==> Analytics
install: 18,699 (30 days), 61,427 (90 days), 237,794 (365 days)
install-on-request: 634 (30 days), 3,807 (90 days), 14,685 (365 days)
build-error: 0 (30 days)
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