From: Marco Costalba <mcostalba@gmail.com>
Date: Tue, 19 Jan 2010 22:30:23 +0000 (+0100)
Subject: Fix enum Value issue with gcc 4.4
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=806c1d87233a98d52db16e4633b92884ce68fee9;hp=a1b8c8109b464abd9d026b1ef740f1bace814b29

Fix enum Value issue with gcc 4.4

Louis Zulli reports a miscompile with g++-4.4 from MacPorts.

Namely enum Value is compiled as unsigned instead of signed integer
and this yields an issue in score_string() where float(v) is incorrectly
casted when Value v is negative.

This patch ensure that compiler choses a signed variable to store a Value.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
---

diff --git a/src/value.h b/src/value.h
index 36484455..58fe3b6c 100644
--- a/src/value.h
+++ b/src/value.h
@@ -48,7 +48,8 @@ enum Value {
   VALUE_KNOWN_WIN = 15000,
   VALUE_MATE = 30000,
   VALUE_INFINITE = 30001,
-  VALUE_NONE = 30002
+  VALUE_NONE = 30002,
+  VALUE_ENSURE_SIGNED = -1
 };