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Fix wrong assert. 

can trigger an abort when compiling with debug=yes, and using 7men TB.
The assert should check that less than 8 pieces are in the key for each
side, matching the assumption that underlies the FEN string construction.
Also take explicitly care of a 'v' character in material strings.

Fixes an issue reported in the forum:
https://groups.google.com/d/msg/fishcooking/yoVC7etIpz0/7mS7ntZMBAAJ

closes https://github.com/official-stockfish/Stockfish/pull/2547

No functional change.
pull/2551/head
Joost VandeVondele 2020-02-07 10:42:10 +01:00
parent 0c878adb36
commit 0aee1ec4ab
1 changed files with 4 additions and 2 deletions
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6
src/position.cpp
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@ -375,11 +375,13 @@ void Position::set_state(StateInfo* si) const {
Position& Position::set(const string& code, Color c, StateInfo* si) {
assert(code.length() > 0 && code.length() < 8);
assert(code[0] == 'K');
string sides[] = { code.substr(code.find('K', 1)), // Weak
code.substr(0, code.find('K', 1)) }; // Strong
code.substr(0, std::min(code.find('v'), code.find('K', 1))) }; // Strong
assert(sides[0].length() > 0 && sides[0].length() < 8);
assert(sides[1].length() > 0 && sides[1].length() < 8);
std::transform(sides[c].begin(), sides[c].end(), sides[c].begin(), tolower);