From: Marco Costalba <mcostalba@gmail.com>
Date: Sun, 13 Aug 2017 18:01:26 +0000 (-0700)
Subject: Fix involuntary conversions of ExtMove to Move
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=d482e3a8905ee194bda3f67a21dda5132c21f30b;hp=d482e3a8905ee194bda3f67a21dda5132c21f30b

Fix involuntary conversions of ExtMove to Move

The trick is to create an ambiguity for the
compiler in case an unwanted conversion to
Move is attempted like in:

    ExtMove m1{Move(17),4}, m2{Move(4),17};

    std::cout << (m1 < m2) << std::endl; // 1
    std::cout << (m1 > m2) << std::endl; // 1(!)

This fixes issue #1204

No functional change.
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