Fix initialization of TTData.

https://tests.stockfishchess.org/tests/view/6757757686d5ee47d9541de9 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 151200 W: 39396 L: 39306 D: 72498 Ptnml(0-2): 445, 16404, 41781, 16556, 414 Discussed in more detail here official-stockfish#5766 closes official-stockfish#5773 No functional change
vondele · Jan 18, 2025 · 3104cd7 · 3104cd7
1 parent aaafaae
commit 3104cd7
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/src/tt.cpp b/src/tt.cpp
@@ -238,7 +238,9 @@ std::tuple<bool, TTData, TTWriter> TranspositionTable::probe(const Key key) cons
             > tte[i].depth8 - tte[i].relative_age(generation8) * 2)
             replace = &tte[i];
 
-    return {false, TTData(), TTWriter(replace)};
+    return {false,
+            TTData{Move::none(), VALUE_NONE, VALUE_NONE, DEPTH_ENTRY_OFFSET, BOUND_NONE, false},
+            TTWriter(replace)};
 }
 
 

diff --git a/src/tt.h b/src/tt.h
@@ -51,6 +51,15 @@ struct TTData {
     Depth depth;
     Bound bound;
     bool  is_pv;
+
+    TTData() = delete;
+    TTData(Move m, Value v, Value ev, Depth d, Bound b, bool pv) :
+        move(m),
+        value(v),
+        eval(ev),
+        depth(d),
+        bound(b),
+        is_pv(pv) {};
 };