%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2006-2018. All Rights Reserved.
%%
%% Licensed under the Apache License, Version 2.0 (the "License");
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing, software
%% distributed under the License is distributed on an "AS IS" BASIS,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%%
%% %CopyrightEnd%
%%
-module(misc_SUITE).
-export([all/0, suite/0,groups/0,init_per_suite/1, end_per_suite/1,
init_per_group/2,end_per_group/2,
init_per_testcase/2,end_per_testcase/2,
tobias/1,empty_string/1,md5/1,silly_coverage/1,
confused_literals/1,integer_encoding/0,integer_encoding/1,
override_bif/1]).
-include_lib("common_test/include/ct.hrl").
%% For the override_bif testcase.
%% NB, no other testcases in this testsuite can use these without erlang:prefix!
-compile({no_auto_import,[abs/1]}).
-compile({no_auto_import,[binary_part/3]}).
-compile({no_auto_import,[binary_part/2]}).
-import(test_lib,[binary_part/2]).
%% This should do no harm (except for fun byte_size/1 which does not, by design, work with import
-compile({no_auto_import,[byte_size/1]}).
-import(erlang,[byte_size/1]).
%% Cover the code for callback handling.
-callback must_define_this_one() -> 'ok'.
-callback do_something_strange(atom()) -> 'ok'.
-optional_callbacks([do_something_strange/1]).
-optional_callbacks([ignore_me]). %Invalid; ignored.
%% Include an opaque declaration to cover the stripping of
%% opaque types from attributes in v3_kernel.
-opaque misc_SUITE_test_cases() :: [atom()].
init_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
Config.
end_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
ok.
suite() ->
[{ct_hooks,[ts_install_cth]},
{timetrap,{minutes,10}}].
-spec all() -> misc_SUITE_test_cases().
all() ->
[{group,p}].
groups() ->
[{p,[],
[tobias,empty_string,md5,silly_coverage,
confused_literals,integer_encoding,override_bif]}].
init_per_suite(Config) ->
test_lib:recompile(?MODULE),
Config.
end_per_suite(_Config) ->
ok.
init_per_group(_GroupName, Config) ->
Config.
end_per_group(_GroupName, Config) ->
Config.
%%
%% Functions that override new and old bif's
%%
abs(_N) ->
dummy_abs.
binary_part(_,_,_) ->
dummy_bp.
%% Test that local functions and imports override auto-imported BIFs.
override_bif(Config) when is_list(Config) ->
dummy_abs = abs(1),
dummy_bp = binary_part(<<"hello">>,1,1),
dummy = binary_part(<<"hello">>,{1,1}),
1 = erlang:abs(1),
<<"e">> = erlang:binary_part(<<"hello">>,1,1),
<<"e">> = erlang:binary_part(<<"hello">>,{1,1}),
F = fun(X) when byte_size(X) =:= 4 ->
four;
(X) ->
byte_size(X)
end,
four = F(<<1,2,3,4>>),
5 = F(<<1,2,3,4,5>>),
ok.
%% A bug reported by Tobias Lindahl for a development version of R11B.
tobias(Config) when is_list(Config) ->
1 = tobias_1([1,2,3]),
ok.
tobias_1([H|_T]) ->
%% In an R11B compiler, the move optimizer in beam_block would
%% confuse H and _T.
tobias_2(0, 0),
H.
tobias_2(_, _) ->
2.
%% A bug reported by Richard Carlsson. Used to crash beam_asm
%% because of a put_string instruction with an empty string.
%% The real problem was in sys_core_fold (empty strings should
%% be replaced by []).
-record(r, {s = ""}).
empty_string(Config) when is_list(Config) ->
#r{s="x"} = empty_string_1(#r{}),
ok.
empty_string_1(T) ->
case T of
#r{s = ""} -> T #r{s = "x"}
end.
md5(Config) when is_list(Config) ->
case ?MODULE of
misc_SUITE -> md5();
_ -> {skip,"Enough to run this case once."}
end.
md5() ->
Dir = filename:dirname(code:which(?MODULE)),
Beams = filelib:wildcard(filename:join(Dir, "*.beam")),
io:format("Found ~w beam files", [length(Beams)]),
lists:foreach(fun md5_1/1, Beams).
md5_1(Beam) ->
{ok,{Mod,[Vsn]}} = beam_lib:version(Beam),
{ok,Code} = file:read_file(Beam),
{Mod,<<Vsn:128>>} = {Mod,code:module_md5(Code)}.
%% Cover some code that handles internal errors.
silly_coverage(Config) when is_list(Config) ->
%% sys_core_fold, sys_core_alias, sys_core_bsm, sys_core_setel, v3_kernel
BadCoreErlang = {c_module,[],
name,[],[],
[{{c_var,[],{foo,2}},seriously_bad_body}]},
expect_error(fun() -> sys_core_fold:module(BadCoreErlang, []) end),
expect_error(fun() -> sys_core_alias:module(BadCoreErlang, []) end),
expect_error(fun() -> sys_core_bsm:module(BadCoreErlang, []) end),
expect_error(fun() -> sys_core_dsetel:module(BadCoreErlang, []) end),
expect_error(fun() -> v3_kernel:module(BadCoreErlang, []) end),
%% beam_kernel_to_ssa
BadKernel = {k_mdef,[],?MODULE,
[{foo,0}],
[],
[{k_fdef,
{k,[],[],[]},
f,0,[],
seriously_bad_body}]},
expect_error(fun() -> beam_kernel_to_ssa:module(BadKernel, []) end),
%% beam_ssa_lint
%% beam_ssa_recv
%% beam_ssa_pre_codegen
%% beam_ssa_opt
%% beam_ssa_codegen
BadSSA = {b_module,#{},a,b,c,
[{b_function,#{func_info=>{mod,foo,0}},args,bad_blocks,0}]},
expect_error(fun() -> beam_ssa_lint:module(BadSSA, []) end),
expect_error(fun() -> beam_ssa_recv:module(BadSSA, []) end),
expect_error(fun() -> beam_ssa_pre_codegen:module(BadSSA, []) end),
expect_error(fun() -> beam_ssa_opt:module(BadSSA, []) end),
expect_error(fun() -> beam_ssa_codegen:module(BadSSA, []) end),
%% beam_ssa_lint, beam_ssa_pp
{error,[{_,Errors}]} = beam_ssa_lint:module(bad_ssa_lint_input(), []),
_ = [io:put_chars(Mod:format_error(Reason)) ||
{Mod,Reason} <- Errors],
%% Cover printing of annotations in beam_ssa_pp
PPAnno = #{func_info=>{mod,foo,0},other_anno=>value,map_anno=>#{k=>v}},
PPBlocks = #{0=>{b_blk,#{},[],{b_ret,#{},{b_literal,42}}}},
PP = {b_function,PPAnno,[],PPBlocks,0},
io:put_chars(beam_ssa_pp:format_function(PP)),
%% beam_a
BeamAInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2}|non_proper_list]}],99},
expect_error(fun() -> beam_a:module(BeamAInput, []) end),
%% beam_block
BlockInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2}|non_proper_list]}],99},
expect_error(fun() -> beam_block:module(BlockInput, []) end),
%% beam_bs
BsInput = BlockInput,
expect_error(fun() -> beam_bs:module(BsInput, []) end),
%% beam_except
ExceptInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{line,loc},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2}|non_proper_list]}],99},
expect_error(fun() -> beam_except:module(ExceptInput, []) end),
%% beam_clean
CleanInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2},
{jump,{f,42}}]}],99},
expect_error(fun() -> beam_clean:module(CleanInput, []) end),
%% beam_peep. This is tricky. Use a select instruction with
%% an odd number of elements in the list to crash
%% prune_redundant_values/2 but not beam_clean:clean_labels/1.
PeepInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2},{select,op,r,{f,2},[{f,2}]}]}],
2},
expect_error(fun() -> beam_peep:module(PeepInput, []) end),
%% beam_bsm. This is tricky. Our function must be sane enough to not crash
%% btb_index/1, but must crash the main optimization pass.
BsmInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2},
{test,bs_get_binary2,{f,99},0,[{x,0},{atom,all},1,[]],{x,0}},
{block,[a|b]}]}],0},
expect_error(fun() -> beam_bsm:module(BsmInput, []) end),
BeamZInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2}|non_proper_list]}],99},
expect_error(fun() -> beam_z:module(BeamZInput, []) end),
%% beam_validator.
BeamValInput = {?MODULE,[{foo,0}],[],
[{function,foo,0,2,
[{label,1},
{func_info,{atom,?MODULE},{atom,foo},0},
{label,2}|non_proper_list]}],99},
expect_error(fun() -> beam_validator:module(BeamValInput, []) end),
ok.
bad_ssa_lint_input() ->
{b_module,#{},t,
[{foobar,1},{module_info,0},{module_info,1}],
[],
[{b_function,
#{func_info => {t,foobar,1},location => {"t.erl",4}},
[{b_var,0}],
#{0 => {b_blk,#{},[],{b_ret,#{},{b_var,'@undefined_var'}}}},
3},
{b_function,
#{func_info => {t,module_info,0}},
[],
#{0 =>
{b_blk,#{},
[{b_set,#{},
{b_var,{'@ssa_ret',3}},
call,
[{b_remote,
{b_literal,erlang},
{b_literal,get_module_info},
1},
{b_var,'@unknown_variable'}]}],
{b_ret,#{},{b_var,{'@ssa_ret',3}}}}},
4}]}.
expect_error(Fun) ->
try Fun() of
Any ->
io:format("~p", [Any]),
ct:fail(call_was_supposed_to_fail)
catch
Class:Reason:Stk ->
io:format("~p:~p\n~p\n", [Class,Reason,Stk]),
case {Class,Reason} of
{error,undef} ->
ct:fail(not_supposed_to_fail_with_undef);
{_,_} ->
ok
end
end.
confused_literals(Config) when is_list(Config) ->
{0,infinity} = confused_literals_1(int),
{0.0,infinity} = confused_literals_1(float),
ok.
confused_literals_1(int) -> {0,infinity};
confused_literals_1(float) -> {0.0,infinity}.
integer_encoding() ->
[{timetrap,{minutes,4}}].
integer_encoding(Config) when is_list(Config) ->
case ?MODULE of
misc_SUITE -> integer_encoding_1(Config);
_ -> {skip,"Enough to run this case once."}
end.
integer_encoding_1(Config) ->
PrivDir = proplists:get_value(priv_dir, Config),
SrcFile = filename:join(PrivDir, "misc_SUITE_integer_encoding.erl"),
DataFile = filename:join(PrivDir, "integer_encoding.data"),
Mod = misc_SUITE_integer_encoding,
%% Create files.
{ok,Src} = file:open(SrcFile, [write]),
{ok,Data} = file:open(DataFile, [write]),
io:format(Src, "-module(~s).\n", [Mod]),
io:put_chars(Src, "-export([t/1]).\n"),
io:put_chars(Src, "t(Last) ->[\n"),
io:put_chars(Data, "[\n"),
do_integer_encoding(137, 0, Src, Data),
_ = [begin
B = 1 bsl I,
do_integer_encoding(-B-1, Src, Data),
do_integer_encoding(-B, Src, Data),
do_integer_encoding(-B+1, Src, Data),
do_integer_encoding(B-1, Src, Data),
do_integer_encoding(B, Src, Data),
do_integer_encoding(B+1, Src, Data)
end || I <- lists:seq(1, 130)],
io:put_chars(Src, "Last].\n\n"),
ok = file:close(Src),
io:put_chars(Data, "0].\n\n"),
ok = file:close(Data),
%% Compile and load Erlang module.
SrcRoot = filename:rootname(SrcFile),
{ok,Mod,Binary} = compile:file(SrcRoot, [binary,report]),
{module,Mod} = code:load_binary(Mod, SrcRoot, Binary),
%% Compare lists.
List = Mod:t(0),
{ok,[List]} = file:consult(DataFile),
%% Cleanup.
file:delete(SrcFile),
file:delete(DataFile),
ok.
do_integer_encoding(0, _, _, _) -> ok;
do_integer_encoding(N, I0, Src, Data) ->
I1 = (I0 bsl 5) bor (rand:uniform(32) - 1),
do_integer_encoding(I1, Src, Data),
I2 = -(I1 bxor (rand:uniform(32) - 1)),
do_integer_encoding(I2, Src, Data),
do_integer_encoding(N-1, I1, Src, Data).
do_integer_encoding(I, Src, Data) ->
Str = integer_to_list(I),
io:put_chars(Src, [Str,",\n"]),
io:put_chars(Data, [Str,",\n"]).
