diff options
| -rw-r--r-- | lib/compiler/test/map_SUITE.erl | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl index 86f65c3ed6..b76108005c 100644 --- a/lib/compiler/test/map_SUITE.erl +++ b/lib/compiler/test/map_SUITE.erl @@ -30,6 +30,7 @@ t_list_comprehension/1, t_map_sort_literals/1, t_map_size/1, + t_build_and_match_aliasing/1, %% warnings t_warn_useless_build/1, @@ -54,6 +55,8 @@ all() -> [ t_guard_bifs, t_guard_sequence, t_guard_update, t_guard_receive,t_guard_fun, t_list_comprehension, t_map_sort_literals, + t_map_size, + t_build_and_match_aliasing, %% warnings t_warn_useless_build, @@ -112,6 +115,20 @@ t_build_and_match_literals(Config) when is_list(Config) -> {'EXIT',{{badmatch,_},_}} = (catch (#{x:=3} = id(#{x=>"three"}))), ok. +t_build_and_match_aliasing(Config) when is_list(Config) -> + M1 = id(#{a=>1,b=>2,c=>3,d=>4}), + #{c:=C1=_=_=C2} = M1, + true = C1 =:= C2, + #{a:=A,a:=A,a:=A,b:=B,b:=B} = M1, + #{a:=A,a:=A,a:=A,b:=B,b:=B,b:=2} = M1, + #{a:=A=1,a:=A,a:=A,b:=B=2,b:=B,b:=2} = M1, + #{c:=C1, c:=_, c:=3, c:=_, c:=C2} = M1, + #{c:=C=_=3=_=C} = M1, + + M2 = id(#{"a"=>1,"b"=>2,"c"=>3,"d"=>4}), + #{"a":=A2,"a":=A2,"a":=A2,"b":=B2,"b":=B2,"b":=2} = M2, + #{"a":=_,"a":=_,"a":=_,"b":=_,"b":=_,"b":=2} = M2, + ok. t_map_size(Config) when is_list(Config) -> 0 = map_size(id(#{})), |