File 2461-erts_internal-Avoiding-breaking-opacity-for-iterator.patch of Package erlang

From e9c81ceec583c5ee825aed622749a2fd9794e1cb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Tue, 7 Feb 2023 12:38:45 +0100
Subject: [PATCH] erts_internal: Avoiding breaking opacity for iterators

Dialyzer would complain that code that used map generators with
iterators would break the opacity of the iterators. Change the
spec for the internal helper functions to not claim they return
map iterators from the `maps` module.
---
 erts/preloaded/ebin/erts_internal.beam | Bin 29848 -> 29840 bytes
 erts/preloaded/src/erts_internal.erl   |   6 +++---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/erts/preloaded/src/erts_internal.erl b/erts/preloaded/src/erts_internal.erl
index 7286c3eedc..a27e39dc26 100644
--- a/erts/preloaded/src/erts_internal.erl
+++ b/erts/preloaded/src/erts_internal.erl
@@ -444,9 +444,9 @@ map_next(_I, _M, _A) ->
 %% Introduced in Erlang/OTP 26. This function is a helper, called from
 %% code generated by the compiler. It must be kept compatible as long
 %% code calling this helper can still be loaded.
--spec mc_iterator(MapOrIter) -> NI | [] when
+-spec mc_iterator(MapOrIter) -> NI when
       MapOrIter :: map() | maps:iterator(),
-      NI :: maps:iterator().
+      NI :: term().
 
 mc_iterator(Map) when is_map(Map) ->
     erts_internal:map_next(0, Map, iterator);
@@ -491,7 +491,7 @@ is_map_iter(Iter) ->
       M :: map(),
       K :: term(),
       V :: term(),
-      NI :: maps:iterator().
+      NI :: term().
 
 mc_refill([Path | Map]) ->
     erts_internal:map_next(Path, Map, iterator).
-- 
2.35.3