diff options
Diffstat (limited to 'lib/compiler/test/bs_match_SUITE.erl')
-rw-r--r-- | lib/compiler/test/bs_match_SUITE.erl | 216 |
1 files changed, 210 insertions, 6 deletions
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl index b4277f0705..2cfcb841a7 100644 --- a/lib/compiler/test/bs_match_SUITE.erl +++ b/lib/compiler/test/bs_match_SUITE.erl @@ -40,7 +40,10 @@ map_and_binary/1,unsafe_branch_caching/1, bad_literals/1,good_literals/1,constant_propagation/1, parse_xml/1,get_payload/1,escape/1,num_slots_different/1, - beam_bsm/1,guard/1,is_ascii/1,non_opt_eq/1,erl_689/1]). + beam_bsm/1,guard/1,is_ascii/1,non_opt_eq/1, + expression_before_match/1,erl_689/1,restore_on_call/1, + restore_after_catch/1,matches_on_parameter/1,big_positions/1, + matching_meets_apply/1,bs_start_match2_defs/1]). -export([coverage_id/1,coverage_external_ignore/2]). @@ -56,7 +59,7 @@ all() -> [{group,p}]. groups() -> - [{p,[parallel], + [{p,[], [size_shadow,int_float,otp_5269,null_fields,wiger, bin_tail,save_restore, partitioned_bs_match,function_clause,unit, @@ -72,7 +75,10 @@ groups() -> map_and_binary,unsafe_branch_caching, bad_literals,good_literals,constant_propagation,parse_xml, get_payload,escape,num_slots_different, - beam_bsm,guard,is_ascii,non_opt_eq,erl_689]}]. + beam_bsm,guard,is_ascii,non_opt_eq, + expression_before_match,erl_689,restore_on_call, + matches_on_parameter,big_positions, + matching_meets_apply,bs_start_match2_defs]}]. init_per_suite(Config) -> @@ -736,6 +742,20 @@ coverage(Config) when is_list(Config) -> binary = coverage_bitstring(<<7>>), bitstring = coverage_bitstring(<<7:4>>), other = coverage_bitstring([a]), + + %% Cover code in beam_trim. + + {done,<<17,53>>,[253,155,200]} = + coverage_trim(<<253,155,200,17,53>>, e0, e1, e2, e3, []), + + <<"(right|linux)">> = coverage_trim_1(<<"">>, <<"right">>, <<"linux">>), + <<"/(right|linux)">> = coverage_trim_1(<<"/">>, <<"right">>, <<"linux">>), + <<"(left|linux)/(right|linux)">> = + coverage_trim_1(<<"left">>, <<"right">>, <<"linux">>), + + {10,<<"-">>,""} = coverage_trim_2(<<"-">>, 10, []), + {8,<<"-">>,"aa"} = coverage_trim_2(<<"aa-">>, 10, []), + ok. coverage_fold(Fun, Acc, <<H,T/binary>>) -> @@ -830,6 +850,37 @@ coverage_bitstring(Bin) when is_binary(Bin) -> binary; coverage_bitstring(<<_/bitstring>>) -> bitstring; coverage_bitstring(_) -> other. +coverage_trim(<<C:8,T/binary>> = Bin, E0, E1, E2, E3, Acc) -> + case id(C > 128) of + true -> + coverage_trim(T, E0, E1, E2, E3, [C|Acc]); + false -> + {done,Bin,lists:reverse(Acc)} + end. + +coverage_trim_1(<<>>, Right, OsType) -> + do_coverage_trim_1(Right, OsType); +coverage_trim_1(<<"/">>, Right, OsType) -> + <<"/",(do_coverage_trim_1(Right, OsType))/binary>>; +coverage_trim_1(Left, Right, OsType) -> + <<(do_coverage_trim_1(Left, OsType))/binary, + "/", + (do_coverage_trim_1(Right, OsType))/binary>>. + +do_coverage_trim_1(A, OsType) -> + <<"(",A/binary,"|",OsType/binary,")">>. + +coverage_trim_2(<<C/utf8,R/binary>> = Bin, I, L) -> + case printable_char(C) of + true -> + coverage_trim_2(R, I - 1, [C | L]); + false -> + {I,Bin,lists:reverse(L)} + end. + +printable_char($a) -> true; +printable_char(_) -> false. + multiple_uses(Config) when is_list(Config) -> {344,62879,345,<<245,159,1,89>>} = multiple_uses_1(<<1,88,245,159,1,89>>), true = multiple_uses_2(<<0,0,197,18>>), @@ -1734,14 +1785,22 @@ non_opt_eq([], <<>>) -> %% ERL-689 -erl_689(Config) -> +erl_689(_Config) -> {{0, 0, 0}, <<>>} = do_erl_689_1(<<0>>, ?MODULE), {{2018, 8, 7}, <<>>} = do_erl_689_1(<<4,2018:16/little,8,7>>, ?MODULE), {{0, 0, 0}, <<>>} = do_erl_689_2(?MODULE, <<0>>), {{2018, 8, 7}, <<>>} = do_erl_689_2(?MODULE, <<4,2018:16/little,8,7>>), ok. -do_erl_689_1(<<Length, Data/binary>>, _) -> +do_erl_689_1(Arg1, Arg2) -> + Res = do_erl_689_1a(Arg1, Arg2), + Res = do_erl_689_1b(Arg1, Arg2). + +do_erl_689_2(Arg1, Arg2) -> + Res = do_erl_689_2a(Arg1, Arg2), + Res = do_erl_689_2b(Arg1, Arg2). + +do_erl_689_1a(<<Length, Data/binary>>, _) -> case {Data, Length} of {_, 0} -> %% bs_context_to_binary would incorrectly set Data to the original @@ -1751,7 +1810,19 @@ do_erl_689_1(<<Length, Data/binary>>, _) -> {{Y, M, D}, Rest} end. -do_erl_689_2(_, <<Length, Data/binary>>) -> +do_erl_689_1b(<<Length, Data/binary>>, _) -> + case {Data, Length} of + {_, 0} -> + %% bs_context_to_binary would incorrectly set Data to the original + %% binary (before matching in the function head). + id(0), + {{0, 0, 0}, Data}; + {<<Y:16/little, M, D, Rest/binary>>, 4} -> + id(1), + {{Y, M, D}, Rest} + end. + +do_erl_689_2a(_, <<Length, Data/binary>>) -> case {Length, Data} of {0, _} -> %% bs_context_to_binary would incorrectly set Data to the original @@ -1761,7 +1832,140 @@ do_erl_689_2(_, <<Length, Data/binary>>) -> {{Y, M, D}, Rest} end. +do_erl_689_2b(_, <<Length, Data/binary>>) -> + case {Length, Data} of + {0, _} -> + %% bs_context_to_binary would incorrectly set Data to the original + %% binary (before matching in the function head). + id(0), + {{0, 0, 0}, Data}; + {4, <<Y:16/little, M, D, Rest/binary>>} -> + id(1), + {{Y, M, D}, Rest} + end. + +%% ERL-753 + +bs_start_match2_defs(_Config) -> + {<<"http://127.0.0.1:1234/vsaas/hello">>} = api_url(<<"hello">>), + {"https://127.0.0.1:4321/vsaas/hello"} = api_url({https, "hello"}). + +api_url(URL) -> + case URL of + <<_/binary>> -> {<<"http://127.0.0.1:1234/vsaas/",URL/binary>>}; + {https, [_|_] = URL1} -> {"https://127.0.0.1:4321/vsaas/"++URL1} + end. + check(F, R) -> R = F(). +%% Make sure that an expression that comes between function start and a match +%% expression passes validation. +expression_before_match(Config) when is_list(Config) -> + <<_,R/binary>> = id(<<0,1,2,3>>), + {1, <<2,3>>} = expression_before_match_1(R), + ok. + +expression_before_match_1(R) -> + A = id(1), + case R of + <<1,Bar/binary>> -> {A, Bar}; + <<>> -> {A, baz} + end. + +%% Make sure that context positions are updated on calls. +restore_on_call(Config) when is_list(Config) -> + ok = restore_on_call_1(<<0, 1, 2>>). + +restore_on_call_1(<<0, Rest/binary>>) -> + <<2>> = restore_on_call_2(Rest), + <<2>> = restore_on_call_2(Rest), %% {badmatch, <<>>} on missing restore. + ok. + +restore_on_call_2(<<1, Rest/binary>>) -> Rest; +restore_on_call_2(Other) -> Other. + +%% 'catch' must invalidate positions. +restore_after_catch(Config) when is_list(Config) -> + <<0, 1>> = restore_after_catch_1(<<0, 1>>), + ok. + +restore_after_catch_1(<<A/binary>>) -> + try throw_after_byte(A) of + _ -> impossible + catch + throw:_Any -> + %% Will equal <<1>> if the bug is present. + A + end. + +throw_after_byte(<<_,_/binary>>) -> + throw(away). + +matches_on_parameter(Config) when is_list(Config) -> + %% This improves coverage for matching on "naked" parameters. + {<<"urka">>, <<"a">>} = matches_on_parameter_1(<<"gurka">>), + ok = (catch matches_on_parameter_2(<<"10001110101">>, 0)). + +matches_on_parameter_1(Bin) -> + <<"g", A/binary>> = Bin, + <<_,_,"rk", B/binary>> = Bin, + {A, B}. + +matches_on_parameter_2(Bin, Offset) -> + <<_:Offset, Bit:1, Rest/bits>> = Bin, + case bit_size(Rest) of + 0 -> throw(ok); + _ -> [Bit | matches_on_parameter_2(Bin, Offset + 1)] + end. + +big_positions(Config) when is_list(Config) -> + %% This provides coverage for when match context positions no longer fit + %% into an immediate on 32-bit platforms. + + A = <<0:((1 bsl 27) - 8), $A, 1:1, "gurka", $A>>, + B = <<0:((1 bsl 27) - 8), $B, "hello", $B>>, + + {a,$A} = bp_start_match(A), + {b,$B} = bp_start_match(B), + {a,$A} = bp_getpos(A), + {b,$B} = bp_getpos(B), + + ok. + +%% After the first iteration the context's position will no longer fit into an +%% immediate. To improve performance the bs_start_match3 instruction will +%% return a new context with an updated base position so that we won't have to +%% resort to using bigints. +bp_start_match(<<_:(1 bsl 27),T/bits>>) -> bp_start_match(T); +bp_start_match(<<1:1,"gurka",A>>) -> {a,A}; +bp_start_match(<<"hello",B>>) -> {b,B}. + +%% This is a corner case where the above didn't work perfectly; if the position +%% was _just_ small enough to fit into an immediate when bs_start_match3 was +%% hit, but too large at bs_get_position, then it must be saved as a bigint. +bp_getpos(<<_:((1 bsl 27) - 8),T/bits>>) -> bp_getpos(T); +bp_getpos(<<A,1:1,"gurka",A>>) -> {a,A}; +bp_getpos(<<B,"hello",B>>) -> {b,B}. + +matching_meets_apply(_Config) -> + <<"abc">> = do_matching_meets_apply(<<"/abc">>, []), + 42 = do_matching_meets_apply(<<"">>, {erlang,-42}), + 100 = do_matching_meets_apply(no_binary, {erlang,-100}), + ok. + +do_matching_meets_apply(<<$/, Rest/binary>>, _Handler) -> + id(Rest); +do_matching_meets_apply(<<_/binary>>=Name, never_matches_a) -> + %% Used to crash the compiler because variables in a remote + %% were not handled properly by beam_ssa_bsm. + Name:foo(gurka); +do_matching_meets_apply(<<_/binary>>=Name, never_matches_b) -> + %% Another case of the above. + foo:Name(gurka); +do_matching_meets_apply(_Bin, {Handler, State}) -> + %% Another case of the above. + Handler:abs(State). + + id(I) -> I. |