Fix (+ bignum float) bug

* src/data.c (bignum_arith_driver): Fix typo: missing ‘return’.
* test/src/data-tests.el (data-tests-bignum): Test for the typo.

2 files changed, 12 insertions, 2 deletions

diff --git a/src/data.c b/src/data.c
index 1e97d9efa15..cc080372d8b 100644
--- a/src/data.c
+++ b/src/data.c
@@ -2920,8 +2920,8 @@ bignum_arith_driver (enum arithop code, ptrdiff_t nargs, Lisp_Object *args,
       val = args[argnum];
       CHECK_NUMBER_COERCE_MARKER (val);
       if (FLOATP (val))
-        float_arith_driver (code, nargs, args, argnum,
-                            mpz_get_d (*accum), val);
+        return float_arith_driver (code, nargs, args, argnum,
+                                   mpz_get_d (*accum), val);
     }
 }
 
diff --git a/test/src/data-tests.el b/test/src/data-tests.el
index 701e579ae2e..3cd4802a981 100644
--- a/test/src/data-tests.el
+++ b/test/src/data-tests.el
@@ -547,6 +547,16 @@ comparing the subr with a much slower lisp implementation."
     (should (<= b-1 b0))
     (should (<= b-1 b-1))
 
+    (should (= (+ f0 b0) (+ b0 f0)))
+    (should (= (+ f0 b-1) (+ b-1 f0)))
+    (should (= (+ f-1 b0) (+ b0 f-1)))
+    (should (= (+ f-1 b-1) (+ b-1 f-1)))
+
+    (should (= (* f0 b0) (* b0 f0)))
+    (should (= (* f0 b-1) (* b-1 f0)))
+    (should (= (* f-1 b0) (* b0 f-1)))
+    (should (= (* f-1 b-1) (* b-1 f-1)))
+
     (should (= b0 f0))
     (should (= b0 b0))