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Diffstat (limited to 'ext/ffi_c/MemoryPointer.c')
-rw-r--r--ext/ffi_c/MemoryPointer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/ffi_c/MemoryPointer.c b/ext/ffi_c/MemoryPointer.c
index 0a747fb..8227183 100644
--- a/ext/ffi_c/MemoryPointer.c
+++ b/ext/ffi_c/MemoryPointer.c
@@ -46,7 +46,7 @@ static VALUE memptr_free(VALUE self);
VALUE rbffi_MemoryPointerClass;
-#define MEMPTR(obj) ((MemoryPointer *) rbffi_AbstractMemory_Cast(obj, rbffi_MemoryPointerClass))
+#define MEMPTR(obj) ((MemoryPointer *) rbffi_AbstractMemory_Cast(obj, &memory_pointer_data_type))
VALUE
rbffi_MemoryPointer_NewInstance(long size, long count, bool clear)