Candidate fix for stockfish problems under gcc

[royb]

Could you please try with the correct fen ?

8/6p1/2p4p/pp2k3/P7/2PK2P1/7P/8 w - - 0 1

Yes, you are right. In that case with -O2 -> correct score, with -O3 -> draw.
But at least no more crash.

Pascal Georges

On the subject of gcc optimization settings ...

My experience in testing Stockfish-1.6 vs other strong engines shows that only -O1 produces a strong Stockfish engine. -O2 and -O3 produce binaries that both lose almost 100% of their games vs other strong engines. -O1 makes a binary that runs without glaring tactical blunders being made.

Roy