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use safe math (#3249)

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This commit is contained in:
Shawn Tabrizi
2021-06-16 11:19:41 +01:00
committed by GitHub
parent 2fbd705ed5
commit b64d9885ad
1 changed files with 4 additions and 4 deletions
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polkadot/xcm/xcm-builder/src/weight.rs
+4 -4
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@@ -27,9 +27,9 @@ impl<T: Get<Weight>, C: Decode + GetDispatchInfo> WeightBounds<C> for FixedWeigh
fn shallow(message: &mut Xcm<C>) -> Result<Weight, ()> {
Ok(match message {
Xcm::Transact { call, .. } => {
call.ensure_decoded()?.get_dispatch_info().weight + T::get()
call.ensure_decoded()?.get_dispatch_info().weight.saturating_add(T::get())
}
Xcm::RelayedFrom { ref mut message, .. } => T::get() + Self::shallow(message.as_mut())?,
Xcm::RelayedFrom { ref mut message, .. } => T::get().saturating_add(Self::shallow(message.as_mut())?),
Xcm::WithdrawAsset { effects, .. }
| Xcm::ReserveAssetDeposit { effects, .. }
| Xcm::TeleportAsset { effects, .. }
@@ -46,7 +46,7 @@ impl<T: Get<Weight>, C: Decode + GetDispatchInfo> WeightBounds<C> for FixedWeigh
},
_ => T::get(),
}).sum();
T::get() + inner
T::get().saturating_add(inner)
}
_ => T::get(),
})
@@ -63,7 +63,7 @@ impl<T: Get<Weight>, C: Decode + GetDispatchInfo> WeightBounds<C> for FixedWeigh
match effect {
Order::BuyExecution { xcm, .. } => {
for message in xcm.iter_mut() {
extra += Self::shallow(message)? + Self::deep(message)?;
extra.saturating_accrue(Self::shallow(message)?.saturating_add(Self::deep(message)?));
}
},
_ => {}