X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-invoice%2Fsrc%2Flib.rs;h=f06eeaa1744bfcf16e5c74d6e61423d8fc44d082;hb=84070e113857fb2842ce4b457375c9bc5ca4f74a;hp=20eaf7a82d27a7970872883536f7edce1da55c69;hpb=9ca22800b4eefde53776e8fbbc2e187e07f393da;p=rust-lightning

diff --git a/lightning-invoice/src/lib.rs b/lightning-invoice/src/lib.rs
index 20eaf7a8..f06eeaa1 100644
--- a/lightning-invoice/src/lib.rs
+++ b/lightning-invoice/src/lib.rs
@@ -1068,9 +1068,10 @@ impl RawBolt11Invoice {
 		find_all_extract!(self.known_tagged_fields(), TaggedField::PrivateRoute(ref x), x).collect()
 	}
 
+	/// Returns `None` if no amount is set or on overflow.
 	pub fn amount_pico_btc(&self) -> Option<u64> {
-		self.hrp.raw_amount.map(|v| {
-			v * self.hrp.si_prefix.as_ref().map_or(1_000_000_000_000, |si| { si.multiplier() })
+		self.hrp.raw_amount.and_then(|v| {
+			v.checked_mul(self.hrp.si_prefix.as_ref().map_or(1_000_000_000_000, |si| { si.multiplier() }))
 		})
 	}