add "volatile" to prevent compiler optimizing away code

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@482 57ff6487-cd31-0410-9ec3-f628ee90f5f0

1 files changed, 1 insertions, 1 deletions

diff --git a/idea.cpp b/idea.cpp
index b0768fa..bbbdbac 100644
--- a/idea.cpp
+++ b/idea.cpp
@@ -30,7 +30,7 @@ CRYPTOPP_COMPILE_ASSERT(sizeof(IDEA::Word) >= 2);
 }
 
 #ifdef IDEA_LARGECACHE
-bool IDEA::Base::tablesBuilt = false;
+volatile bool IDEA::Base::tablesBuilt = false;
 word16 IDEA::Base::log[0x10000];
 word16 IDEA::Base::antilog[0x10000];