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Diffstat (limited to 'ext/SDBM_File/sdbm/sdbm.h')
-rw-r--r--ext/SDBM_File/sdbm/sdbm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/SDBM_File/sdbm/sdbm.h b/ext/SDBM_File/sdbm/sdbm.h
index 5bc629f402..ac2dc36b01 100644
--- a/ext/SDBM_File/sdbm/sdbm.h
+++ b/ext/SDBM_File/sdbm/sdbm.h
@@ -49,7 +49,7 @@ typedef struct {
extern datum nullitem;
-#if defined(__STDC__) || defined(__cplusplus)
+#if defined(__STDC__) || defined(__cplusplus) || defined(CAN_PROTOTYPE)
#define proto(p) p
#else
#define proto(p) ()