X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-invoice%2Fsrc%2Flib.rs;h=fb34240bee1b32ee397f9acce1de769db65bf9a7;hb=78ab54ff82199c92b57a4939dab94d3fff91a88b;hp=920d44b1561dbf12f8afdc1e3e5105eb8a5aefef;hpb=b8d4ac1371bf0db3b28339d4e12fadf02f6add3d;p=rust-lightning

diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index 920d44b1..fb34240b 100644
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -577,7 +577,13 @@ impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool, S: tb::Bool, M: tb::Boo
 
 	/// Sets the amount in millisatoshis. The optimal SI prefix is chosen automatically.
 	pub fn amount_milli_satoshis(mut self, amount_msat: u64) -> Self {
-		let amount = amount_msat * 10; // Invoices are denominated in "pico BTC"
+		let amount = match amount_msat.checked_mul(10) { // Invoices are denominated in "pico BTC"
+			Some(amt) => amt,
+			None => {
+				self.error = Some(CreationError::InvalidAmount);
+				return self
+			}
+		};
 		let biggest_possible_si_prefix = SiPrefix::values_desc()
 			.iter()
 			.find(|prefix| amount % prefix.multiplier() == 0)