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-rw-r--r--ext/dbm/dbm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/dbm/dbm.c b/ext/dbm/dbm.c
index c3229d65c5..fec06a0dac 100644
--- a/ext/dbm/dbm.c
+++ b/ext/dbm/dbm.c
@@ -24,7 +24,7 @@
#define DSIZE_TYPE TYPEOF_DATUM_DSIZE
#if SIZEOF_DATUM_DSIZE > SIZEOF_INT
# define RSTRING_DSIZE(s) RSTRING_LEN(s)
-# define TOO_LONG(n) 0
+# define TOO_LONG(n) ((void)(n),0)
#else
# define RSTRING_DSIZE(s) RSTRING_LENINT(s)
# define TOO_LONG(n) ((long)(+(DSIZE_TYPE)(n)) != (n))