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Diffstat (limited to 'Zend/zend_alloc.c')
-rw-r--r--Zend/zend_alloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Zend/zend_alloc.c b/Zend/zend_alloc.c
index 2d8d26a99f..3c3b579e7b 100644
--- a/Zend/zend_alloc.c
+++ b/Zend/zend_alloc.c
@@ -515,7 +515,7 @@ static unsigned int _zend_mm_cookie = 0;
#define ZEND_MM_IS_GUARD_BLOCK(b) (((b)->info._size & ZEND_MM_TYPE_MASK) == ZEND_MM_GUARD_BLOCK)
#define ZEND_MM_NEXT_BLOCK(b) ZEND_MM_BLOCK_AT(b, ZEND_MM_BLOCK_SIZE(b))
-#define ZEND_MM_PREV_BLOCK(b) ZEND_MM_BLOCK_AT(b, -(int)((b)->info._prev & ~ZEND_MM_TYPE_MASK))
+#define ZEND_MM_PREV_BLOCK(b) ZEND_MM_BLOCK_AT(b, -(ssize_t)((b)->info._prev & ~ZEND_MM_TYPE_MASK))
#define ZEND_MM_PREV_BLOCK_IS_FREE(b) (!((b)->info._prev & ZEND_MM_USED_BLOCK))