Allow future extensibility without binary compatibility break

1 files changed, 1 insertions, 0 deletions

diff --git a/Zend/zend_alloc.h b/Zend/zend_alloc.h
index 70670d1f17..9be4342348 100644
--- a/Zend/zend_alloc.h
+++ b/Zend/zend_alloc.h
@@ -194,6 +194,7 @@ typedef struct _zend_mm_mem_handlers {
 
 struct _zend_mm_storage {
 	const zend_mm_mem_handlers *handlers;
+	void *data;
 };
 
 ZEND_API zend_mm_heap *zend_mm_startup_ex(const zend_mm_mem_handlers *handlers, size_t block_size, void *params);