Fix multiply overflow error

arkivm · arkivm · commit f53192642e67 · 2020-05-27T16:26:18.000-06:00
diff --git a/sys/lib/libbenchnet/src/packettool.rs b/sys/lib/libbenchnet/src/packettool.rs
@@ -59,7 +59,7 @@ pub fn fix_udp_checksum(frame: &mut [u8]) {
 #[inline(always)]
 fn fnv_a(data: &[u8], state: &mut u64) {
     for byte in data.iter() {
-        *state *= 0x100000001b3;
+        *state = (*state).wrapping_mul(0x100000001b3);
         *state ^= u64::from(*byte);
     }
 }
@@ -92,7 +92,7 @@ pub fn get_flowhash(frame: &[u8]) -> Option<usize> {
         return None;
     }
     */
-    state *= 0x100000001b3;
+    state = state.wrapping_mul(0x100000001b3);
     state ^= u64::from(proto);
 
     // proto.hash(&mut h1);

Original file line number	Diff line number	Diff line change
`@@ -59,7 +59,7 @@ pub fn fix_udp_checksum(frame: &mut [u8]) {`
`59`	`59`	`#[inline(always)]`
`60`	`60`	`fn fnv_a(data: &[u8], state: &mut u64) {`
`61`	`61`	`for byte in data.iter() {`
`62`		`- state = 0x100000001b3;`
	`62`	`+ state = (state).wrapping_mul(0x100000001b3);`
`63`	`63`	`state ^= u64::from(byte);`
`64`	`64`	`}`
`65`	`65`	`}`
`@@ -92,7 +92,7 @@ pub fn get_flowhash(frame: &[u8]) -> Option<usize> {`
`92`	`92`	`return None;`
`93`	`93`	`}`
`94`	`94`	`*/`
`95`		`- state *= 0x100000001b3;`
	`95`	`+ state = state.wrapping_mul(0x100000001b3);`
`96`	`96`	`state ^= u64::from(proto);`
`97`	`97`
`98`	`98`	`// proto.hash(&mut h1);`