Use libunwind's unw_get_proc_info_in_range on macOS#126159
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janvorli merged 1 commit intodotnet:mainfrom Apr 24, 2026
Merged
Use libunwind's unw_get_proc_info_in_range on macOS#126159janvorli merged 1 commit intodotnet:mainfrom
janvorli merged 1 commit intodotnet:mainfrom
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@janvorli, could you please take a look? |
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On macOS, we use the system-provided libunwind, which is effectively llvm-libunwind (with possible Apple-specific patches). This library does not expose remote unwind -specific APIs such as
unw_get_proc_info_in_range().However, for remote unwinding we rely on HP libunwind on macOS, and it’s used only by the cross-OS/arch
createdumputility, which handles .NET crash dumps from any target/host OS combination. CMake’s feature introspection gets confused here because it reports capabilities from the OS libunwind used by the rest of CoreCLR rather than from the HP libunwind used in this path.In this context we rely on explicit
__APPLE__checks because the CMake-detected capabilities don’t match the library this code actually uses. This was originally missed in #108250. Both implementations behave the same, and we’ll be able to drop the fallback once RHEL 9 (with HP libunwind 1.8) becomes the minimum baseline which is still years out.