diff options
| -rw-r--r-- | lib/compiler/src/beam_validator.erl | 4 | ||||
| -rw-r--r-- | lib/compiler/src/v3_codegen.erl | 60 | ||||
| -rw-r--r-- | lib/compiler/test/map_SUITE.erl | 24 |
3 files changed, 67 insertions, 21 deletions
diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl index 13aa31b7c9..4c0cb6780a 100644 --- a/lib/compiler/src/beam_validator.erl +++ b/lib/compiler/src/beam_validator.erl @@ -658,8 +658,10 @@ valfun_4({test,is_map,{f,Lbl},[Src]}, Vst0) -> case Src of {Tag,_} when Tag =:= x; Tag =:= y -> set_type_reg(map, Src, Vst); + {literal,Map} when is_map(Map) -> + Vst; _ -> - Vst + kill_state(Vst) end; valfun_4({test,_Op,{f,Lbl},Src}, Vst) -> validate_src(Src, Vst), diff --git a/lib/compiler/src/v3_codegen.erl b/lib/compiler/src/v3_codegen.erl index f5f3c73793..4df1aadd0a 100644 --- a/lib/compiler/src/v3_codegen.erl +++ b/lib/compiler/src/v3_codegen.erl @@ -1551,12 +1551,10 @@ set_cg([{var,R}], {binary,Segs}, Le, Vdb, Bef, #cg{bfail=Bfail}=St) -> %% Now generate the complete code for constructing the binary. Code = cg_binary(PutCode, Target, Temp, Fail, MaxRegs, Le#l.a), {Sis++Code,Aft,St}; -% Map single variable key -set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, - #cg{bfail=Bfail}=St) -> - Fail = {f,Bfail}, - {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St), +%% Map: single variable key. +set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, St0) -> + {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0), SrcReg = cg_reg_arg_prefer_y(Map, Int0), Line = line(Le#l.a), @@ -1570,21 +1568,16 @@ set_cg([{var,R}], {map,Op,Map,[{map_pair,{var,_}=K,V}]}, Le, Vdb, Bef, Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)}, Target = fetch_reg(R, Aft#sr.reg), - I = case Op of - assoc -> put_map_assoc; - exact -> put_map_exact - end, - {Sis++[Line]++[{I,Fail,SrcReg,Target,Live,{list,List}}],Aft,St}; + {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0), + {Sis++Is,Aft,St1}; -% Map (possibly) multiple literal keys -set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, - #cg{bfail=Bfail}=St) -> +%% Map: (possibly) multiple literal keys. +set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, St0) -> %% assert key literals [] = [Var||{map_pair,{var,_}=Var,_} <- Es], - Fail = {f,Bfail}, - {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St), + {Sis,Int0} = maybe_adjust_stack(Bef, Le#l.i, Le#l.i+1, Vdb, St0), SrcReg = cg_reg_arg_prefer_y(Map, Int0), Line = line(Le#l.a), @@ -1599,11 +1592,10 @@ set_cg([{var,R}], {map,Op,Map,Es}, Le, Vdb, Bef, Aft = Aft0#sr{reg=put_reg(R, Aft0#sr.reg)}, Target = fetch_reg(R, Aft#sr.reg), - I = case Op of - assoc -> put_map_assoc; - exact -> put_map_exact - end, - {Sis++[Line]++[{I,Fail,SrcReg,Target,Live,{list,List}}],Aft,St}; + {Is,St1} = set_cg_map(Line, Op, SrcReg, Target, Live, List, St0), + {Sis++Is,Aft,St1}; + +%% Everything else. set_cg([{var,R}], Con, Le, Vdb, Bef, St) -> %% Find a place for the return register first. Int = Bef#sr{reg=put_reg(R, Bef#sr.reg)}, @@ -1616,6 +1608,34 @@ set_cg([{var,R}], Con, Le, Vdb, Bef, St) -> end, {Ais,clear_dead(Int, Le#l.i, Vdb),St}. + +set_cg_map(Line, Op0, SrcReg, Target, Live, List, St0) -> + Bfail = St0#cg.bfail, + Fail = {f,St0#cg.bfail}, + Op = case Op0 of + assoc -> put_map_assoc; + exact -> put_map_exact + end, + {OkLbl,St1} = new_label(St0), + {BadLbl,St2} = new_label(St1), + Is = if + Bfail =:= 0 orelse Op =:= put_map_assoc -> + [Line,{Op,{f,0},SrcReg,Target,Live,{list,List}}]; + true -> + %% Ensure that Target is always set, even if + %% the map update operation fails. That is necessary + %% because Target may be included in a test_heap + %% instruction. + [Line, + {Op,{f,BadLbl},SrcReg,Target,Live,{list,List}}, + {jump,{f,OkLbl}}, + {label,BadLbl}, + {move,{atom,ok},Target}, + {jump,Fail}, + {label,OkLbl}] + end, + {Is,St2}. + %%% %%% Code generation for constructing binaries. %%% diff --git a/lib/compiler/test/map_SUITE.erl b/lib/compiler/test/map_SUITE.erl index c3c4862794..36e82c1459 100644 --- a/lib/compiler/test/map_SUITE.erl +++ b/lib/compiler/test/map_SUITE.erl @@ -1287,6 +1287,7 @@ t_guard_update(Config) when is_list(Config) -> first = map_guard_update(#{}, #{x=>first}), second = map_guard_update(#{y=>old}, #{x=>second,y=>old}), third = map_guard_update(#{x=>old,y=>old}, #{x=>third,y=>old}), + bad_map_guard_update(), ok. t_guard_update_large(Config) when is_list(Config) -> @@ -1353,6 +1354,29 @@ map_guard_update(M1, M2) when M1#{x=>second} =:= M2 -> second; map_guard_update(M1, M2) when M1#{x:=third} =:= M2 -> third; map_guard_update(_, _) -> error. +bad_map_guard_update() -> + do_bad_map_guard_update(fun burns/1), + do_bad_map_guard_update(fun turns/1), + ok. + +do_bad_map_guard_update(Fun) -> + do_bad_map_guard_update_1(Fun, #{}), + do_bad_map_guard_update_1(Fun, #{true=>1}), + ok. + +do_bad_map_guard_update_1(Fun, Value) -> + %% Note: The business with the seemingly redundant fun + %% disables inlining, which would otherwise change the + %% EXIT reason. + {'EXIT',{function_clause,_}} = (catch Fun(Value)), + ok. + +burns(Richmond) when not (Richmond#{true := 0}); [Richmond] -> + specification. + +turns(Richmond) when not (Richmond#{true => 0}); [Richmond] -> + specification. + t_guard_receive(Config) when is_list(Config) -> M0 = #{ id => 0 }, Pid = spawn_link(fun() -> guard_receive_loop() end), |