Fixed regression caused by unsigned integer underflow and added a test script

konsolas · konsolas · commit 5b8f713a785c · 2021-08-14T13:32:55.000+01:00
diff --git a/hash.h b/hash.h
@@ -140,7 +140,7 @@ namespace tt {
 
         // Other accessors
         [[nodiscard]] inline Bound bound() const { return Bound(info.about & 3u); }
-        [[nodiscard]] inline unsigned depth() const { return (info.about >> 2u) & 255u; }
+        [[nodiscard]] inline int depth() const { return int((info.about >> 2u) & 255u); }
         [[nodiscard]] inline unsigned generation() const { return info.about >> 10u; }
     };
     static_assert(sizeof(entry_t) == 16);
diff --git a/test.sh b/test.sh
@@ -0,0 +1,46 @@
+#!/bin/bash -xe
+
+cpus=$(nproc)
+threads=1
+concurrency=64
+cutechess_path=~/cutechess-cli
+syzygy_path=~/syzygy
+book_file=~/openings.pgn
+book_format=pgn;
+time_control="60+1"
+
+commit_1=$1
+commit_2=$2
+
+git fetch
+mkdir -p build
+
+git checkout -- .
+git checkout "$commit_1"
+read -pr "$commit_1: press enter to continue: "
+cd build
+cmake ..
+make -j "$cpus" Topple
+mv Topple "$commit_1"
+cd ..
+
+git checkout -- .
+git checkout "$commit_2"
+read -pr "$commit_2: press enter to continue: "
+cd build
+cmake ..
+make -j "$cpus" Topple
+mv Topple "$commit_2"
+cd ..
+
+mkdir -p test
+cd test
+
+$cutechess_path -openings file=$book_file format=$book_format order=sequential -repeat \
+    -each dir=. option.Hash=512 option.Threads=$threads restart=on stderr=cutechess.log proto=uci tc=$time_control \
+    -engine name="$commit_1" cmd=../build/"$commit_1" -engine name="$commit_2" cmd=../build/"$commit_2" \
+    -concurrency $concurrency -games 10000 \
+    -sprt elo0=0 elo1=5 alpha=0.1 beta=0.1 \
+    -resign movecount=5 score=1000 \
+    -draw movenumber=35 movecount=10 score=5 \
+    -tb $syzygy_path
