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-rw-r--r--ext/psych/psych_emitter.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/ext/psych/psych_emitter.c b/ext/psych/psych_emitter.c
index 67f54f1..29df96a 100644
--- a/ext/psych/psych_emitter.c
+++ b/ext/psych/psych_emitter.c
@@ -1,5 +1,12 @@
#include <psych.h>
+#if !defined(RARRAY_CONST_PTR)
+#define RARRAY_CONST_PTR(s) (const VALUE *)RARRAY_PTR(s)
+#endif
+#if !defined(RARRAY_AREF)
+#define RARRAY_AREF(a, i) RARRAY_CONST_PTR(a)[i]
+#endif
+
VALUE cPsychEmitter;
static ID id_write;
static ID id_line_width;