X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Foffers%2Foffer.rs;h=405e2e278d8073eac345a801f88906422989f173;hb=5c6a39bd5be6bd5933f935d8dd1dbe8a54e36493;hp=a535b378250afbd335bf790680c3f157f75d042c;hpb=153d831ccc931683dbd505bdd07c915409e9a9e1;p=rust-lightning

diff --git a/lightning/src/offers/offer.rs b/lightning/src/offers/offer.rs
index a535b378..405e2e27 100644
--- a/lightning/src/offers/offer.rs
+++ b/lightning/src/offers/offer.rs
@@ -242,7 +242,7 @@ impl OfferBuilder {
 ///
 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
 /// [`Invoice`]: crate::offers::invoice::Invoice
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
 pub struct Offer {
 	// The serialized offer. Needed when creating an `InvoiceRequest` if the offer contains unknown
 	// fields.
@@ -254,7 +254,7 @@ pub struct Offer {
 ///
 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
 /// [`Invoice`]: crate::offers::invoice::Invoice
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
 pub(super) struct OfferContents {
 	chains: Option<Vec<ChainHash>>,
 	metadata: Option<Vec<u8>>,
@@ -431,7 +431,8 @@ impl OfferContents {
 		};
 
 		if !self.expects_quantity() || quantity.is_some() {
-			let expected_amount_msats = offer_amount_msats * quantity.unwrap_or(1);
+			let expected_amount_msats = offer_amount_msats.checked_mul(quantity.unwrap_or(1))
+				.ok_or(SemanticError::InvalidAmount)?;
 			let amount_msats = amount_msats.unwrap_or(expected_amount_msats);
 
 			if amount_msats < expected_amount_msats {