--- src/qcommon/vm_x86.c.old	2008-06-25 16:02:14 +0400
+++ src/qcommon/vm_x86.c	2008-06-25 16:03:03 +0400
@@ -1086,6 +1086,11 @@
 	vm->codeBase = malloc(compiledOfs);
 #endif
 
+	char e = 0;
+	int ii;
+	for (ii = 0; ii < compiledOfs; ii++)
+		vm->codeBase[ii] = e;
+
 	Com_Memcpy( vm->codeBase, buf, compiledOfs );
 
 #ifdef VM_X86_MMAP