undefined byteLength should be treated 0 in DataView constructor (#2856)

This patch fixes #2854. JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2019-05-10 10:47:25 +02:00
parent 4bdc3a1c46
commit 063e7fde2b
2 changed files with 23 additions and 1 deletions
@@ -112,7 +112,11 @@ ecma_op_dataview_create (const ecma_value_t *arguments_list_p, /**< arguments li

    int32_t byte_length_int32 = ecma_number_to_int32 (byte_length);

-    if (ecma_number_is_infinity (byte_length))
+    if (ecma_number_is_nan (byte_length))
+    {
+      viewByteLength = 0;
+    }
+    else if (ecma_number_is_infinity (byte_length))
    {
      viewByteLength = UINT32_MAX;
    }