diff options
Diffstat (limited to 'lib/compiler/test/beam_type_SUITE.erl')
| -rw-r--r-- | lib/compiler/test/beam_type_SUITE.erl | 56 |
1 files changed, 54 insertions, 2 deletions
diff --git a/lib/compiler/test/beam_type_SUITE.erl b/lib/compiler/test/beam_type_SUITE.erl index 882e281a44..a99dee48aa 100644 --- a/lib/compiler/test/beam_type_SUITE.erl +++ b/lib/compiler/test/beam_type_SUITE.erl @@ -24,7 +24,8 @@ 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]). + test_size/1,cover_lists_functions/1,list_append/1,bad_binary_unit/1, + none_argument/1]). suite() -> [{ct_hooks,[ts_install_cth]}]. @@ -47,7 +48,10 @@ groups() -> elixir_binaries, find_best, test_size, - cover_lists_functions + cover_lists_functions, + list_append, + bad_binary_unit, + none_argument ]}]. init_per_suite(Config) -> @@ -271,8 +275,22 @@ setelement(_Config) -> T0 = id({a,42}), {a,_} = T0, {b,_} = setelement(1, T0, b), + {z,b} = do_setelement_1(<<(id(1)):32>>, {a,b}, z), + {new,two} = do_setelement_2(<<(id(1)):1>>, {one,two}, new), ok. +do_setelement_1(<<N:32>>, Tuple, NewValue) -> + _ = element(N, Tuple), + %% While updating the type for Tuple, beam_ssa_type would do: + %% maps:without(lists:seq(0, 4294967295), Elements) + setelement(N, Tuple, NewValue). + +do_setelement_2(<<N:1>>, Tuple, NewValue) -> + %% Cover the second clause in remove_element_info/2. The + %% type for the second element will be kept. + two = element(2, Tuple), + setelement(N, Tuple, NewValue). + cons(_Config) -> [did] = cons(assigned, did), @@ -487,5 +505,39 @@ cover_lists_functions(Config) -> true = is_list(Zipped), ok. +list_append(_Config) -> + %% '++'/2 has a quirk where it returns the right-hand argument as-is when + %% the left-hand is []. + 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. + +%% ERL-1013: The compiler would crash during the type optimization pass. +none_argument(_Config) -> + Binary = id(<<3:16, 42>>), + error = id(case Binary of + <<Len:16, Body/binary>> when length(Body) == Len - 2 -> + %% The type for Body will be none. It means + %% that this clause will never match and that + %% uncompress/1 will never be called. + uncompress(Body); + _ -> + error + end), + ok. + +uncompress(CompressedBinary) -> + %% The type for CompressedBinary is none, which beam_ssa_type + %% did not handle properly. + zlib:uncompress(CompressedBinary). + id(I) -> I. |