fixes #24034; fixes lent types after taking implicit address (#24035)

fixes #24034

(cherry picked from commit 11ead19bc1)

compiler/semexprs.nim

@@ -1850,6 +1850,8 @@ proc takeImplicitAddr(c: PContext, n: PNode; isLent: bool): PNode =
     else:
       localError(c.config, n.info, errExprHasNoAddress)
   result = newNodeIT(nkHiddenAddr, n.info, if n.typ.kind in {tyVar, tyLent}: n.typ else: makePtrType(c, n.typ))
+  if n.typ.kind in {tyVar, tyLent}:
+    n.typ = n.typ.elementType
   result.add(n)
 
 proc asgnToResultVar(c: PContext, n, le, ri: PNode) {.inline.} =

tests/lent/tlent_from_var.nim

@@ -50,3 +50,22 @@ template get*[T: not void](self: Opt[T]): T = self.value()
 method connect*(
   self: Opt[(int, int)]) =
   discard self.get()[0]
+
+block: # bug #24034
+  type T = object
+    v: array[100, byte]
+
+
+  iterator pairs(t: T): (int, lent array[100, byte]) =
+    yield (0, t.v)
+
+
+  block:
+    for a, b in default(T):
+      doAssert a == 0
+      doAssert b.len == 100
+
+  block:
+    for (a, b) in pairs(default(T)):
+      doAssert a == 0
+      doAssert b.len == 100