define constant only if it wasn't defined before

symfony · Nov 29, 2014 · 388229b · 388229b
1 parent efbf588
commit 388229b
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/src/Symfony/Component/ClassLoader/ClassMapGenerator.php b/src/Symfony/Component/ClassLoader/ClassMapGenerator.php
@@ -11,10 +11,12 @@
 
 namespace Symfony\Component\ClassLoader;
 
-if (PHP_VERSION_ID >= 50400) {
-    define('SYMFONY_TRAIT', T_TRAIT);
-} else {
-    define('SYMFONY_TRAIT', 0);
+if (!defined('SYMFONY_TRAIT')) {
+    if (PHP_VERSION_ID >= 50400) {
+        define('SYMFONY_TRAIT', T_TRAIT);
+    } else {
+        define('SYMFONY_TRAIT', 0);
+    }
 }
 
 /**