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-rw-r--r--mysys/lf_alloc-pin.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mysys/lf_alloc-pin.c b/mysys/lf_alloc-pin.c
index 4fae8e37ddb..7c3e3785b68 100644
--- a/mysys/lf_alloc-pin.c
+++ b/mysys/lf_alloc-pin.c
@@ -320,7 +320,7 @@ static int match_pins(LF_PINS *el, void *addr)
#define available_stack_size(CUR,END) (long) ((char*)(END) - (char*)(CUR))
#endif
-#define next_node(P, X) (*((uchar **)(((uchar *)(X)) + (P)->free_ptr_offset)))
+#define next_node(P, X) (*((uchar * volatile *)(((uchar *)(X)) + (P)->free_ptr_offset)))
#define anext_node(X) next_node(&allocator->pinbox, (X))
/*