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cksum: exit 1 when OOM #12931

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cksum: exit 1 when OOM #12931

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9 changes: 8 additions & 1 deletion src/uucore/src/lib/features/sum.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -443,7 +443,14 @@ macro_rules! impl_digest_shake {
}

fn result(&mut self) -> DigestOutput {
let mut bytes = vec![0; self.output_bits().div_ceil(8)];
let mut bytes = Vec::new();
// catch OOM
let len = self.output_bits().div_ceil(8);
if let Err(e) = bytes.try_reserve(len) {
let _ = writeln!(std::io::stderr(), "{e}");
std::process::exit(1); //todo: remove this exit. This rejects embedding uu_app to consumers.
}
bytes.resize(len, 0);
self.hash_finalize(&mut bytes);
DigestOutput::Vec(bytes)
}
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