Wrap no_mangle in unsafe
#25
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As of the Rust 2024 edition. The
no_mangleattribute must be wrapped inunsafe. This PR changes the macro in this crate to emitunsafe(no_mangle)instead, so that this crate now compiles in the 2024 edition.I hope that this is backwards compatible with older versions. Unfortuantly, there is no
cfg!(edition >= 2024)to branch on.