X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Frr.rs;h=c5855559c9efa1479e44d2568a2b152092f6c885;hb=1bc1a6325dce9c48f5610edccb91a38a1abb3084;hp=9886e3a71ceff967da990ffc8fa882d806650241;hpb=f7579b7b761672d9d08a0297258b04861188a52a;p=dnssec-prover

diff --git a/src/rr.rs b/src/rr.rs
index 9886e3a..c585555 100644
--- a/src/rr.rs
+++ b/src/rr.rs
@@ -218,7 +218,7 @@ impl StaticRecord for Txt {
 		format!("{{\"type\":\"txt\",\"name\":\"{}\",\"contents\":{:?}}}", self.name.0, &self.data[..])
 	}
 	fn read_from_data(name: Name, mut data: &[u8], _wire_packet: &[u8]) -> Result<Self, ()> {
-		let mut parsed_data = Vec::with_capacity(data.len() - 1);
+		let mut parsed_data = Vec::with_capacity(data.len().saturating_sub(1));
 		while !data.is_empty() {
 			let len = read_u8(&mut data)? as usize;
 			if data.len() < len { return Err(()); }