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Fix a bogus assert in allows()

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Becuase castle is coded as "king captures the rook"
the to_sq(move), A1/8 or H1/8 is empty after the move,
leading to assert assert(p != NO_PIECE) in color_of().

Teach allows() asserts about castle and fix the crash.

Bug reported by Ryan Takker and tracked down by Tom Vijlbrief.

No functional change.
This commit is contained in:
Marco Costalba
2013-08-30 16:40:11 +02:00
parent 14f47c8ac6
commit 3e4dcaa06e
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@@ -1400,7 +1400,7 @@ moves_loop: // When in check and at SpNode search starts from here
assert(is_ok(first));
assert(is_ok(second));
assert(color_of(pos.piece_on(from_sq(second))) == ~pos.side_to_move());
assert(color_of(pos.piece_on(to_sq(first))) == ~pos.side_to_move());
assert(type_of(first) == CASTLE || color_of(pos.piece_on(to_sq(first))) == ~pos.side_to_move());
Square m1from = from_sq(first);
Square m2from = from_sq(second);