fix crash if CVAR_HASHSIZE was set to a value below 65536

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@9471 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/cvar.c b/cvar.c
index 29e299e12a6d6bda8b170bc2bc007f3b9868f18c..111550a8632107df7d141d4aebf2592965cdc128 100644 (file)
--- a/cvar.c
+++ b/cvar.c
@@ -38,7 +38,7 @@ cvar_t *Cvar_FindVar (const char *var_name)
        cvar_t *var;
 
        // use hash lookup to minimize search time
-       hashindex = CRC_Block((const unsigned char *)var_name, strlen(var_name));
+       hashindex = CRC_Block((const unsigned char *)var_name, strlen(var_name)) % CVAR_HASHSIZE;
        for (var = cvar_hashtable[hashindex];var;var = var->nextonhashchain)
                if (!strcmp (var_name, var->name))
                        return var;
@@ -449,7 +449,7 @@ void Cvar_RegisterVariable (cvar_t *variable)
        variable->next = next;
 
        // link to head of list in this hash table index
-       hashindex = CRC_Block((const unsigned char *)variable->name, strlen(variable->name));
+       hashindex = CRC_Block((const unsigned char *)variable->name, strlen(variable->name)) % CVAR_HASHSIZE;
        variable->nextonhashchain = cvar_hashtable[hashindex];
        cvar_hashtable[hashindex] = variable;
 }
@@ -543,7 +543,7 @@ cvar_t *Cvar_Get (const char *name, const char *value, int flags, const char *ne
        cvar->next = next;
 
        // link to head of list in this hash table index
-       hashindex = CRC_Block((const unsigned char *)cvar->name, strlen(cvar->name));
+       hashindex = CRC_Block((const unsigned char *)cvar->name, strlen(cvar->name)) % CVAR_HASHSIZE;
        cvar->nextonhashchain = cvar_hashtable[hashindex];
        cvar_hashtable[hashindex] = cvar;