X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fmovepick.cpp;h=797f5e9497ab14e6d142a0bad75b560914f6018a;hp=7b2479fca6135574ec5aa0c645afb34532849d2b;hb=e1ed67aacbe7fb4b462b9141d3137bed0a3ea70b;hpb=5b1316f7bbb259b87cecc276e4a1ce78b1a0e51b

diff --git a/src/movepick.cpp b/src/movepick.cpp
index 7b2479fc..797f5e94 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -63,13 +63,18 @@ namespace {
 /// search captures, promotions and some checks) and about how important good
 /// move ordering is at the current node.
 
-MovePicker::MovePicker(const Position& p, bool pv, Move ttm,
-                       const SearchStack& ss, Depth d) : pos(p) {
+MovePicker::MovePicker(const Position& p, bool pv, Move ttm, Depth d, SearchStack* ss) : pos(p) {
+
   pvNode = pv;
   ttMove = ttm;
-  mateKiller = (ss.mateKiller == ttm)? MOVE_NONE : ss.mateKiller;
-  killer1 = ss.killers[0];
-  killer2 = ss.killers[1];
+  if (ss)
+  {
+      mateKiller = (ss->mateKiller == ttm)? MOVE_NONE : ss->mateKiller;
+      killer1 = ss->killers[0];
+      killer2 = ss->killers[1];
+  } else
+      mateKiller = killer1 = killer2 = MOVE_NONE;
+
   depth = d;
   movesPicked = 0;
   numOfMoves = 0;