1 files changed, 46 insertions, 0 deletions
diff --git a/tests/lent/tbasic_lent_check.nim b/tests/lent/tbasic_lent_check.nim
index 4389cbc6e..ce9b89adf 100644
--- a/tests/lent/tbasic_lent_check.nim
+++ b/tests/lent/tbasic_lent_check.nim
@@ -1,4 +1,5 @@
 discard """
+  targets: "c cpp js"
   output: "1"
 """
 
@@ -14,3 +15,48 @@ proc main =
   doAssert(not compiles(passToVar(viewInto(x))))
 
 main()
+
+template main2 = # bug #15958
+  when defined(js):
+    proc sameAddress[T](a, b: T): bool {.importjs: "(# === #)".}
+  else:
+    template sameAddress(a, b): bool = a.unsafeAddr == b.unsafeAddr
+  proc byLent[T](a: T): lent T = a
+  let a = [11,12]
+  let b = @[21,23]
+  let ss = {1, 2, 3, 5}
+  doAssert byLent(a) == [11,12]
+  doAssert sameAddress(byLent(a), a)
+  doAssert byLent(b) == @[21,23]
+  # bug #16073
+  doAssert sameAddress(byLent(b), b)
+  doAssert byLent(ss) == {1, 2, 3, 5}
+  doAssert sameAddress(byLent(ss), ss)
+
+  let r = new(float)
+  r[] = 10.0
+  # bug #16073
+  doAssert byLent(r)[] == 10.0
+
+  when not defined(js): # pending bug https://github.com/timotheecour/Nim/issues/372
+    let p = create(float)
+    p[] = 20.0
+    doAssert byLent(p)[] == 20.0
+
+  proc byLent2[T](a: openArray[T]): lent T = a[0]
+  doAssert byLent2(a) == 11
+  doAssert sameAddress(byLent2(a), a[0])
+  doAssert byLent2(b) == 21
+  doAssert sameAddress(byLent2(b), b[0])
+
+  proc byLent3[T](a: varargs[T]): lent T = a[1]
+  let 
+    x = 10
+    y = 20
+    z = 30
+  doAssert byLent3(x, y, z) == 20
+
+main2()
+when false:
+  # bug: Error: unhandled exception: 'node' is not accessible using discriminant 'kind' of type 'TFullReg' [FieldDefect]
+  static: main2()