One more underflow check

2018-07-11 12:46:10 -11:00
parent 0fa08b81c9
commit 8ba2ae9e59
1 changed files with 4 additions and 0 deletions
--- a/src/komodo_bitcoind.h
+++ b/src/komodo_bitcoind.h
@@ -1352,7 +1352,11 @@ arith_uint256 komodo_PoWtarget(int32_t *percPoSp,arith_uint256 target,int32_t he
        if ( bnTarget > easydiff )
            bnTarget = easydiff;
        else if ( bnTarget < ave ) // overflow
+        {
            bnTarget = ((ave * arith_uint256(goalperc)) + (easydiff * arith_uint256(percPoS))) / arith_uint256(percPoS + goalperc);
+            if ( bnTarget < ave )
+                bnTarget = ave;
+        }
        if ( 1 )
        {
            for (i=31; i>=24; i--)