Index: core/cfdefs/cfdef_mantisuser.php
===================================================================
--- core/cfdefs/cfdef_mantisuser.php	(révision 35968)
+++ core/cfdefs/cfdef_mantisuser.php	(copie de travail)
@@ -143,15 +143,16 @@
  * Code pilfered from adm_config_set.php.
  * @access private
  */
-function constant_replace( $p_name ) {
-	$t_result = $p_name;
-	if ( is_string( $p_name ) && defined( $p_name ) ) {
-		// we have a constant
-		$t_result = constant( $p_name );
-	}
-	return $t_result;
+if (!function_exists('constant_replace')) {
+  function constant_replace( $p_name ) {
+    $t_result = $p_name;
+    if ( is_string( $p_name ) && defined( $p_name ) ) {
+      // we have a constant
+      $t_result = constant( $p_name );
+    }
+    return $t_result;
+  }
 }
-	
 /** 
  * Sort the user rows returned by project_get_all_user_rows() 
  * Code pilfered from print_user_option_list.php.