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Add From<u8> for ExitCode by yaahc · Pull Request #93445 · rust-lang/rust...
source link: https://github.com/rust-lang/rust/pull/93445
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This should cover a mostly cross-platform subset of supported exit codes.
We decided to stick with u8 initially since its the common subset between all platforms that we support (excluding wasm which I think only works with true or false). Posix is supposed to take i32s, but in practice many unix platforms mask out all but the low 8 bits or in some cases the 8-15th bits. Windows takes a u32 instead of an i32. Bourne-compatible shells also report signals as exitcode 128 + signal_no, so there's some ambiguity there when returning exit codes > 127, but it is possible to disambiguate them on the other side so we decided against restricting the possible codes further than to u8.
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