diff options
Diffstat (limited to 'lib/stdlib/test')
| -rw-r--r-- | lib/stdlib/test/lists_SUITE.erl | 11 | ||||
| -rw-r--r-- | lib/stdlib/test/re_SUITE.erl | 57 |
2 files changed, 66 insertions, 2 deletions
diff --git a/lib/stdlib/test/lists_SUITE.erl b/lib/stdlib/test/lists_SUITE.erl index 5dab6f6697..c3c54710eb 100644 --- a/lib/stdlib/test/lists_SUITE.erl +++ b/lib/stdlib/test/lists_SUITE.erl @@ -2600,6 +2600,15 @@ subtract(Config) when is_list(Config) -> [1,2,3,4,5,6,7,8,9,9999,10000,20,21,22] = sub(lists:seq(1, 10000)++[20,21,22], lists:seq(10, 9998)), + %% ERL-986; an integer overflow relating to term comparison + %% caused subtraction to be inconsistent. + Ids = [2985095936,47540628,135460048,1266126295,240535295, + 115724671,161800351,4187206564,4178142725,234897063, + 14773162,6662515191,133150693,378034895,1874402262, + 3507611978,22850922,415521280,253360400,71683243], + + [] = id(Ids) -- id(Ids), + %% Floats/integers. [42.0,42.0] = sub([42.0,42,42.0], [42,42,42]), [1,2,3,4,43.0] = sub([1,2,3,4,5,42.0,43.0], [42.0,5]), @@ -2627,6 +2636,8 @@ subtract(Config) when is_list(Config) -> ok. +id(I) -> I. + sub_non_matching(A, B) -> A = sub(A, B). diff --git a/lib/stdlib/test/re_SUITE.erl b/lib/stdlib/test/re_SUITE.erl index c9ef9da990..06d8fe9255 100644 --- a/lib/stdlib/test/re_SUITE.erl +++ b/lib/stdlib/test/re_SUITE.erl @@ -28,7 +28,8 @@ pcre_compile_workspace_overflow/1,re_infinite_loop/1, re_backwards_accented/1,opt_dupnames/1,opt_all_names/1,inspect/1, opt_no_start_optimize/1,opt_never_utf/1,opt_ucp/1, - match_limit/1,sub_binaries/1,copt/1]). + match_limit/1,sub_binaries/1,copt/1,global_unicode_validation/1, + yield_on_subject_validation/1]). -include_lib("common_test/include/ct.hrl"). -include_lib("kernel/include/file.hrl"). @@ -45,7 +46,8 @@ all() -> pcre_compile_workspace_overflow, re_infinite_loop, re_backwards_accented, opt_dupnames, opt_all_names, inspect, opt_no_start_optimize,opt_never_utf,opt_ucp, - match_limit, sub_binaries, re_version]. + match_limit, sub_binaries, re_version, global_unicode_validation, + yield_on_subject_validation]. groups() -> []. @@ -200,7 +202,58 @@ re_version(_Config) -> {match,[Version]} = re:run(Version,"^[0-9]\\.[0-9]{2} 20[0-9]{2}-[0-9]{2}-[0-9]{2}",[{capture,all,binary}]), ok. +global_unicode_validation(Config) when is_list(Config) -> + %% Test that unicode validation of the subject is not done + %% for every match found... + Bin = binary:copy(<<"abc\n">>,100000), + {TimeAscii, _} = take_time(fun () -> + re:run(Bin, <<"b">>, [global]) + end), + {TimeUnicode, _} = take_time(fun () -> + re:run(Bin, <<"b">>, [unicode,global]) + end), + if TimeAscii == 0; TimeUnicode == 0 -> + {comment, "Not good enough resolution to compare results"}; + true -> + %% The time the operations takes should be in the + %% same order of magnitude. If validation of the + %% whole subject occurs for every match, the unicode + %% variant will take way longer time... + true = TimeUnicode div TimeAscii < 10 + end. + +take_time(Fun) -> + Start = erlang:monotonic_time(nanosecond), + Res = Fun(), + End = erlang:monotonic_time(nanosecond), + {End-Start, Res}. + +yield_on_subject_validation(Config) when is_list(Config) -> + Go = make_ref(), + Bin = binary:copy(<<"abc\n">>,100000), + {P, M} = spawn_opt(fun () -> + receive Go -> ok end, + {match,[{1,1}]} = re:run(Bin, <<"b">>, [unicode]) + end, + [link, monitor]), + 1 = erlang:trace(P, true, [running]), + P ! Go, + N = count_re_run_trap_out(P, M), + true = N >= 5, + ok. +count_re_run_trap_out(P, M) when is_reference(M) -> + receive {'DOWN',M,process,P,normal} -> ok end, + TD = erlang:trace_delivered(P), + receive {trace_delivered, P, TD} -> ok end, + count_re_run_trap_out(P, 0); +count_re_run_trap_out(P, N) when is_integer(N) -> + receive + {trace,P,out,{erlang,re_run_trap,3}} -> + count_re_run_trap_out(P, N+1) + after 0 -> + N + end. %% Test compile options given directly to run. combined_options(Config) when is_list(Config) -> |