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Position::move_is_capture() does not handle MOVE_NONE

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Actually square 0 can be dirty, so that move_is_capture(0)
can return any random values.

Add an assert to be sure it is caught.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2008-12-05 12:38:20 +01:00
parent 268c12bf31
commit dc2302b701
1 changed files with 3 additions and 1 deletions
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4
src/position.cpp
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@@ -675,10 +675,12 @@ bool Position::move_is_check(Move m, Bitboard dcCandidates) const {
/// Position::move_is_capture() tests whether a move from the current
/// position is a capture.
/// position is a capture. Move must not be MOVE_NONE.
bool Position::move_is_capture(Move m) const {
assert(m != MOVE_NONE);
return ( !square_is_empty(move_to(m))
&& (color_of_piece_on(move_to(m)) == opposite_color(side_to_move()))
)