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Response to usage of unwrap in non-test code

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This commit replaces all usage of `unwrap` with `expect` within
`networks/monero`, clarifying why the panic risked is unreachable. This commit
also replaces some uses of `unwrap` with solutions which are guaranteed not to
fail.

Notably, compilation on 128-bit systems is prevented, ensuring
`u64::try_from(usize::MAX)` will never panic at runtime.

Slight breaking changes are additionally included as necessary to massage out
some avoidable panics.
This commit is contained in:
Luke Parker
2025-08-08 21:28:47 -04:00
parent 4f65a0b147
commit a5f4c450c6
31 changed files with 310 additions and 169 deletions
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13
networks/monero/wallet/address/src/lib.rs
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@@ -357,21 +357,21 @@ pub struct Address<const ADDRESS_BYTES: u128> {
impl<const ADDRESS_BYTES: u128> fmt::Debug for Address<ADDRESS_BYTES> {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
let hex = |bytes: &[u8]| -> String {
let hex = |bytes: &[u8]| -> Result<String, fmt::Error> {
let mut res = String::with_capacity(2 + (2 * bytes.len()));
res.push_str("0x");
for b in bytes {
write!(&mut res, "{b:02x}").unwrap();
write!(&mut res, "{b:02x}")?;
}
res
Ok(res)
};
fmt
.debug_struct("Address")
.field("network", &self.network)
.field("kind", &self.kind)
.field("spend", &hex(&self.spend.compress().to_bytes()))
.field("view", &hex(&self.view.compress().to_bytes()))
.field("spend", &hex(&self.spend.compress().to_bytes())?)
.field("view", &hex(&self.view.compress().to_bytes())?)
// This is not a real field yet is the most valuable thing to know when debugging
.field("(address)", &self.to_string())
.finish()
@@ -389,7 +389,8 @@ impl<const ADDRESS_BYTES: u128> fmt::Display for Address<ADDRESS_BYTES> {
if let AddressType::Featured { subaddress, payment_id, guaranteed } = self.kind {
let features_uint =
(u8::from(guaranteed) << 2) + (u8::from(payment_id.is_some()) << 1) + u8::from(subaddress);
write_varint(&features_uint, &mut data).unwrap();
write_varint(&features_uint, &mut data)
.expect("write failed but <Vec as io::Write> doesn't fail");
}
if let Some(id) = self.kind.payment_id() {
data.extend(id);