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Fix incorrect initialization

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Fixes https://github.com/official-stockfish/Stockfish/issues/6505

Missing initialization seemingly resulting in side effects, as discussed in the issue.

Credit to Sopel for spotting the bug.

PR used as a testcase for CoPilot, doing the right thing https://github.com/official-stockfish/Stockfish/pull/6478#discussion_r2655467218

closes https://github.com/official-stockfish/Stockfish/pull/6511

No functional change
This commit is contained in:
Joost VandeVondele
2026-01-01 15:51:09 +01:00
parent 44d5467bbe
commit e0fb783c30
2 changed files with 5 additions and 5 deletions
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src/search.cpp
+2 -2
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@@ -582,8 +582,8 @@ void Search::Worker::clear() {
captureHistory.fill(-689);
// Each thread is responsible for clearing their part of shared history
sharedHistory.correctionHistory.clear_range(0, numaThreadIdx);
sharedHistory.pawnHistory.clear_range(-1238, numaThreadIdx);
sharedHistory.correctionHistory.clear_range(0, numaThreadIdx, numaTotal);
sharedHistory.pawnHistory.clear_range(-1238, numaThreadIdx, numaTotal);
ttMoveHistory = 0;