1 files changed, 1 insertions, 1 deletions
diff --git a/awkgram.c b/awkgram.c
index 469184e5..39c8ff20 100644
--- a/awkgram.c
+++ b/awkgram.c
@@ -8990,7 +8990,7 @@ lookup_builtin(const char *name)
 		return (builtin_func_t) do_sub;
 
 #ifdef HAVE_MPFR
-	if (do_mpfr)
+	if (do_mpfr && tokentab[mid].ptr2 != NULL)
 		return tokentab[mid].ptr2;
 #endif