fixes #5517

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/js/trefbyvar.nim b/tests/js/trefbyvar.nim
index 314a02543..d440fcc64 100644
--- a/tests/js/trefbyvar.nim
+++ b/tests/js/trefbyvar.nim
@@ -52,3 +52,18 @@ input.add(nil)
 input.add(new string)
 input[1][] = "~"
 echo input[1][]
+
+# bug #5517
+type
+  TypeA1 = object of RootObj
+    a_impl: int
+    b_impl: string
+    c_impl: pointer
+
+proc initTypeA1(a: int; b: string; c: pointer = nil): TypeA1 =
+  result.a_impl = a
+  result.b_impl = b
+  result.c_impl = c
+
+let x = initTypeA1(1, "a")
+doAssert($x == "(a_impl: 1, b_impl: a, c_impl: ...)")