From accb19a680e303fd59ff0f6cfb3fd5568a4a91dd Mon Sep 17 00:00:00 2001
From: guy <guy@c028cbd2-c16b-5b4b-a496-9718f37d4682>
Date: Mon, 14 Dec 2009 16:36:55 +0000
Subject: [PATCH] Patch level         : 10.0 Files correlati     : ca1.exe
 Ricompilazione Demo : [ ] Commento            : Controllato stack underflow
 nelle moltiplicazioni

git-svn-id: svn://10.65.10.50/trunk@19772 c028cbd2-c16b-5b4b-a496-9718f37d4682
---
 include/alex.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/alex.cpp b/include/alex.cpp
index 7cdd3cf53..a31eaed05 100755
--- a/include/alex.cpp
+++ b/include/alex.cpp
@@ -906,8 +906,13 @@ void TAVM::execute(const TAVM_op& op)
     {
       const TVariant& v1 = _stack.pop();
       TVariant& v0 = (TVariant&)_stack.peek();
-      const real m = v0.as_real() * v1.as_real();
-      v0.set(m);
+      if (v0.is_real())
+      {
+        const real m = v0.as_real() * v1.as_real();
+        v0.set(m);
+      }
+      else
+        log_error("Stack underflow");
     }
     break;
   case avm_negate: