diff options
Diffstat (limited to 'lib/stdlib/src/erl_eval.erl')
| -rw-r--r-- | lib/stdlib/src/erl_eval.erl | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/lib/stdlib/src/erl_eval.erl b/lib/stdlib/src/erl_eval.erl index 371573dc23..e86e10b170 100644 --- a/lib/stdlib/src/erl_eval.erl +++ b/lib/stdlib/src/erl_eval.erl @@ -246,18 +246,14 @@ expr({record,_,_,Name,_}, _Bs, _Lf, _Ef, _RBs) -> %% map expr({map,_,Binding,Es}, Bs0, Lf, Ef, RBs) -> {value, Map0, Bs1} = expr(Binding, Bs0, Lf, Ef, none), - case Map0 of - #{} -> - {Vs,Bs2} = eval_map_fields(Es, Bs0, Lf, Ef), - Map1 = lists:foldl(fun ({map_assoc,K,V}, Mi) -> - maps:put(K, V, Mi); - ({map_exact,K,V}, Mi) -> - maps:update(K, V, Mi) - end, Map0, Vs), - ret_expr(Map1, merge_bindings(Bs2, Bs1), RBs); - _ -> - erlang:raise(error, {badarg,Map0}, stacktrace()) - end; + {Vs,Bs2} = eval_map_fields(Es, Bs0, Lf, Ef), + _ = maps:put(k, v, Map0), %Validate map. + Map1 = lists:foldl(fun ({map_assoc,K,V}, Mi) -> + maps:put(K, V, Mi); + ({map_exact,K,V}, Mi) -> + maps:update(K, V, Mi) + end, Map0, Vs), + ret_expr(Map1, merge_bindings(Bs2, Bs1), RBs); expr({map,_,Es}, Bs0, Lf, Ef, RBs) -> {Vs,Bs} = eval_map_fields(Es, Bs0, Lf, Ef), ret_expr(lists:foldl(fun |