diff options
Diffstat (limited to 'lib/compiler')
| -rw-r--r-- | lib/compiler/src/beam_ssa_type.erl | 11 | ||||
| -rw-r--r-- | lib/compiler/src/v3_core.erl | 3 | ||||
| -rw-r--r-- | lib/compiler/test/beam_type_SUITE.erl | 14 | ||||
| -rw-r--r-- | lib/compiler/test/fun_SUITE.erl | 20 |
4 files changed, 34 insertions, 14 deletions
diff --git a/lib/compiler/src/beam_ssa_type.erl b/lib/compiler/src/beam_ssa_type.erl index 57fd7fec60..68920e7dd3 100644 --- a/lib/compiler/src/beam_ssa_type.erl +++ b/lib/compiler/src/beam_ssa_type.erl @@ -840,15 +840,8 @@ type({bif,Bif}, Args, Ts, _Ds) -> Type -> Type end; -type(bs_init, [#b_literal{val=Type}|Args], _Ts, _Ds) -> - case {Type,Args} of - {new,[_,#b_literal{val=Unit}]} -> - {binary,Unit}; - {append,[_,_,#b_literal{val=Unit}]} -> - {binary,Unit}; - {private_append,[_,_,#b_literal{val=Unit}]} -> - {binary,Unit} - end; +type(bs_init, _Args, _Ts, _Ds) -> + {binary, 1}; type(bs_extract, [Ctx], Ts, _Ds) -> #t_bs_match{type=Type} = get_type(Ctx, Ts), Type; diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl index 3699c9d22e..007a0247f4 100644 --- a/lib/compiler/src/v3_core.erl +++ b/lib/compiler/src/v3_core.erl @@ -1811,7 +1811,8 @@ force_safe(Ce, St0) -> is_safe(#c_cons{}) -> true; is_safe(#c_tuple{}) -> true; -is_safe(#c_var{}) -> true; +is_safe(#c_var{name={_,_}}) -> false; %Fun. Not safe. +is_safe(#c_var{name=_}) -> true; %Ordinary variable. is_safe(#c_literal{}) -> true; is_safe(_) -> false. diff --git a/lib/compiler/test/beam_type_SUITE.erl b/lib/compiler/test/beam_type_SUITE.erl index 2297c2e0f5..076a604aa4 100644 --- a/lib/compiler/test/beam_type_SUITE.erl +++ b/lib/compiler/test/beam_type_SUITE.erl @@ -24,7 +24,7 @@ integers/1,numbers/1,coverage/1,booleans/1,setelement/1, cons/1,tuple/1,record_float/1,binary_float/1,float_compare/1, arity_checks/1,elixir_binaries/1,find_best/1, - test_size/1,cover_lists_functions/1,list_append/1]). + test_size/1,cover_lists_functions/1,list_append/1,bad_binary_unit/1]). suite() -> [{ct_hooks,[ts_install_cth]}]. @@ -48,7 +48,8 @@ groups() -> find_best, test_size, cover_lists_functions, - list_append + list_append, + bad_binary_unit ]}]. init_per_suite(Config) -> @@ -508,5 +509,14 @@ list_append(_Config) -> hello = id([]) ++ id(hello), ok. +%% OTP-15872: The compiler would treat the "Unit" of bs_init instructions as +%% the unit of the result instead of the required unit of the input, causing +%% is_binary checks to be wrongly optimized away. +bad_binary_unit(_Config) -> + Bin = id(<<1,2,3>>), + Bitstring = <<Bin/binary,1:1>>, + false = is_binary(Bitstring), + ok. + id(I) -> I. diff --git a/lib/compiler/test/fun_SUITE.erl b/lib/compiler/test/fun_SUITE.erl index 1df0a05275..7fc6195e31 100644 --- a/lib/compiler/test/fun_SUITE.erl +++ b/lib/compiler/test/fun_SUITE.erl @@ -22,7 +22,8 @@ -export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1, init_per_group/2,end_per_group/2, test1/1,overwritten_fun/1,otp_7202/1,bif_fun/1, - external/1,eep37/1,eep37_dup/1,badarity/1,badfun/1]). + external/1,eep37/1,eep37_dup/1,badarity/1,badfun/1, + duplicated_fun/1]). %% Internal exports. -export([call_me/1,dup1/0,dup2/0]). @@ -37,7 +38,7 @@ all() -> groups() -> [{p,[parallel], [test1,overwritten_fun,otp_7202,bif_fun,external,eep37, - eep37_dup,badarity,badfun]}]. + eep37_dup,badarity,badfun,duplicated_fun]}]. init_per_suite(Config) -> test_lib:recompile(?MODULE), @@ -261,5 +262,20 @@ badfun(_Config) -> expect_badfun(Term, Exit) -> {'EXIT',{{badfun,Term},_}} = Exit. +duplicated_fun(_Config) -> + try + %% The following code used to crash the compiler before + %% v3_core:is_safe/1 was corrected to consider fun variables + %% unsafe. + id([print_result_paths_fun = fun duplicated_fun_helper/1]), + ct:error(should_fail) + catch + error:{badmatch,F} when is_function(F, 1) -> + ok + end. + +duplicated_fun_helper(_) -> + ok. + id(I) -> I. |