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-rw-r--r--lib/compiler/test/bs_match_SUITE.erl97
-rw-r--r--lib/compiler/test/warnings_SUITE.erl49
2 files changed, 142 insertions, 4 deletions
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index 99539f3779..b79feb1393 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -37,11 +37,13 @@
cover_beam_bool/1,matched_out_size/1,follow_fail_branch/1,
no_partition/1,calling_a_binary/1,binary_in_map/1,
match_string_opt/1,select_on_integer/1,
- map_and_binary/1,unsafe_branch_caching/1]).
+ map_and_binary/1,unsafe_branch_caching/1,
+ bad_literals/1,good_literals/1]).
-export([coverage_id/1,coverage_external_ignore/2]).
-include_lib("common_test/include/ct.hrl").
+-include_lib("syntax_tools/include/merl.hrl").
suite() -> [{ct_hooks,[ts_install_cth]}].
@@ -64,7 +66,8 @@ groups() ->
cover_beam_bool,matched_out_size,follow_fail_branch,
no_partition,calling_a_binary,binary_in_map,
match_string_opt,select_on_integer,
- map_and_binary,unsafe_branch_caching]}].
+ map_and_binary,unsafe_branch_caching,
+ bad_literals,good_literals]}].
init_per_suite(Config) ->
@@ -1293,6 +1296,96 @@ do_unsafe_branch_caching(<<Code/integer, Bin/binary>>) ->
_ -> Bin2
end.
+bad_literals(_Config) ->
+ Mod = list_to_atom(?MODULE_STRING ++ "_" ++
+ atom_to_list(?FUNCTION_NAME)),
+ S = [signed_lit_match(V, Sz) || V <- lists:seq(-8, 8),
+ Sz <- [0,1,2,3]] ++
+ [unsigned_lit_match(V, Sz) || V <- lists:seq(-2, 8),
+ Sz <- [0,1,2]] ++
+ [unicode_match(V) ||
+ V <- [-100,-1,0,1,2|lists:seq(16#10FFFC, 16#110004)]],
+ Code = ?Q(["-module('@Mod@').\n"
+ "-export([f/0]).\n"
+ "f() ->\n"
+ "_@S,\n"
+ "ok.\n"]),
+ merl:print(Code),
+ Opts = test_lib:opt_opts(?MODULE),
+ {ok,_} = merl:compile_and_load(Code, Opts),
+ Mod:f(),
+
+ {'EXIT',<<42>>} = (catch bad_literals_1()),
+
+ Sz = id(8),
+ {'EXIT',{{badmatch,_},_}} = (catch <<-1:Sz>> = <<-1>>),
+ ok.
+
+bad_literals_1() ->
+ BadSz = bad,
+ case case <<42>> of
+ <<42:BadSz>> -> ok;
+ Val -> exit(Val)
+ end of
+ ok -> ok;
+ error -> error
+ end.
+
+signed_lit_match(V, Sz) ->
+ case <<V:Sz>> of
+ <<V:Sz/signed>> ->
+ ?Q("<<_@V@:_@Sz@/signed>> = <<_@V@:_@Sz@>>");
+ _ ->
+ ?Q(["case <<_@V@:_@Sz@>> of\n",
+ " <<_@V@:_@Sz@/signed>> ->\n",
+ " ct:fail(should_not_match);\n",
+ " _ ->\n",
+ " ok\n",
+ "end\n"])
+ end.
+
+unsigned_lit_match(V, Sz) ->
+ case <<V:Sz>> of
+ <<V:Sz/unsigned>> ->
+ ?Q("<<_@V@:_@Sz@>> = <<_@V@:_@Sz@>>");
+ _ ->
+ ?Q(["case <<_@V@:_@Sz@>> of\n",
+ " <<_@V@:_@Sz@/unsigned>> ->\n",
+ " ct:fail(should_not_match);\n",
+ " _ ->\n",
+ " ok\n",
+ "end\n"])
+ end.
+
+unicode_match(V) ->
+ try <<V/utf8>> of
+ <<V/utf8>> ->
+ ?Q(["<<_@V@/utf8>> = <<_@V@/utf8>>,\n",
+ "<<_@V@/utf16>> = <<_@V@/utf16>>,\n",
+ "<<_@V@/utf32>> = <<_@V@/utf32>>\n"])
+ catch
+ error:badarg ->
+ ?Q(["case <<_@V@:32>> of\n",
+ " <<_@V@/utf32>> ->\n",
+ " ct:fail(should_not_match);\n",
+ " _ ->\n",
+ " ok\n",
+ "end\n"])
+ end.
+
+%% Test a few legal but rare cases.
+
+good_literals(_Config) ->
+ Sz = id(64),
+
+ %% Variable size.
+ <<42:Sz>> = id(<<42:Sz>>),
+ <<42.0:Sz/float>> = id(<<42:Sz/float>>),
+
+ %% unit > 1
+ <<16#cafebeef:4/unit:8>> = id(<<16#cafebeef:32>>),
+ ok.
+
check(F, R) ->
R = F().
diff --git a/lib/compiler/test/warnings_SUITE.erl b/lib/compiler/test/warnings_SUITE.erl
index 2a425c2ae5..df5f6760e4 100644
--- a/lib/compiler/test/warnings_SUITE.erl
+++ b/lib/compiler/test/warnings_SUITE.erl
@@ -41,7 +41,8 @@
files/1,effect/1,bin_opt_info/1,bin_construction/1,
comprehensions/1,maps/1,maps_bin_opt_info/1,
redundant_boolean_clauses/1,
- latin1_fallback/1,underscore/1,no_warnings/1]).
+ latin1_fallback/1,underscore/1,no_warnings/1,
+ bit_syntax/1]).
% Default timetrap timeout (set in init_per_testcase).
-define(default_timeout, ?t:minutes(2)).
@@ -68,7 +69,7 @@ groups() ->
bin_opt_info,bin_construction,comprehensions,maps,
maps_bin_opt_info,
redundant_boolean_clauses,latin1_fallback,
- underscore,no_warnings]}].
+ underscore,no_warnings,bit_syntax]}].
init_per_suite(Config) ->
Config.
@@ -783,6 +784,50 @@ no_warnings(Config) when is_list(Config) ->
run(Config, Ts),
ok.
+bit_syntax(Config) ->
+ Ts = [{?FUNCTION_NAME,
+ <<"a(<<-1>>) -> ok;
+ a(<<1023>>) -> ok;
+ a(<<777/signed>>) -> ok;
+ a(<<a/binary>>) -> ok;
+ a(<<a/integer>>) -> ok;
+ a(<<a/float>>) -> ok;
+ a(<<a/utf8>>) -> ok;
+ a(<<a/utf16>>) -> ok;
+ a(<<a/utf32>>) -> ok;
+ a(<<a/utf32>>) -> ok.
+ b(Bin) -> Sz = bad, <<42:Sz>> = Bin.
+ c(Sz, Bin) ->
+ case Bin of
+ <<-42:Sz/unsigned>> -> ok;
+ <<42:Sz/float>> -> ok;
+ <<42:Sz/binary>> -> ok
+ end.
+ ">>,
+ [],
+ {warnings,[{1,sys_core_fold,no_clause_match},
+ {1,sys_core_fold,{nomatch_bit_syntax_unsigned,-1}},
+ {2,sys_core_fold,{nomatch_bit_syntax_truncated,
+ unsigned,1023,8}},
+ {3,sys_core_fold,{nomatch_bit_syntax_truncated,
+ signed,777,8}},
+ {4,sys_core_fold,{nomatch_bit_syntax_type,a,binary}},
+ {5,sys_core_fold,{nomatch_bit_syntax_type,a,integer}},
+ {6,sys_core_fold,{nomatch_bit_syntax_type,a,float}},
+ {7,sys_core_fold,{nomatch_bit_syntax_type,a,utf8}},
+ {8,sys_core_fold,{nomatch_bit_syntax_type,a,utf16}},
+ {9,sys_core_fold,{nomatch_bit_syntax_type,a,utf32}},
+ {10,sys_core_fold,{nomatch_bit_syntax_type,a,utf32}},
+ {11,sys_core_fold,no_clause_match},
+ {11,sys_core_fold,{nomatch_bit_syntax_size,bad}},
+ {14,sys_core_fold,{nomatch_bit_syntax_unsigned,-42}},
+ {16,sys_core_fold,{nomatch_bit_syntax_type,42,binary}}
+ ]}
+ }],
+ run(Config, Ts),
+ ok.
+
+
%%%
%%% End of test cases.
%%%