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-rw-r--r--ext/ffi_c/AbstractMemory.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/ffi_c/AbstractMemory.c b/ext/ffi_c/AbstractMemory.c
index 971d244..b81884a 100644
--- a/ext/ffi_c/AbstractMemory.c
+++ b/ext/ffi_c/AbstractMemory.c
@@ -49,6 +49,9 @@
#include "Function.h"
#include "LongDouble.h"
+#ifndef PRIsVALUE
+# define PRIsVALUE "s"
+#endif
static inline char* memory_address(VALUE self);
VALUE rbffi_AbstractMemoryClass = Qnil;