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authorAnthony Ramine <[email protected]>2013-03-28 08:52:43 +0100
committerFredrik Gustafsson <[email protected]>2013-06-05 12:08:39 +0200
commit90efeaf21147505b1e8207822e606027f94183cc (patch)
treea8f4709a1625aa7ac96e67b08a43119943aae34a /lib/stdlib/test/erl_lint_SUITE.erl
parent872987787b0d95b89c45920c8b5453a86580d201 (diff)
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Forbid unsized fields in patterns of binary generators
It makes no sense to be able to do `<<...,Rest/binary>> <= ...` in a comprehension. The related Dialyzer test is removed.
Diffstat (limited to 'lib/stdlib/test/erl_lint_SUITE.erl')
-rw-r--r--lib/stdlib/test/erl_lint_SUITE.erl31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/stdlib/test/erl_lint_SUITE.erl b/lib/stdlib/test/erl_lint_SUITE.erl
index f8345559c4..b1236ceedf 100644
--- a/lib/stdlib/test/erl_lint_SUITE.erl
+++ b/lib/stdlib/test/erl_lint_SUITE.erl
@@ -48,6 +48,7 @@
unused_function/1,
unsafe_vars/1,unsafe_vars2/1,
unsafe_vars_try/1,
+ unsized_binary_in_bin_gen_pattern/1,
guard/1, otp_4886/1, otp_4988/1, otp_5091/1, otp_5276/1, otp_5338/1,
otp_5362/1, otp_5371/1, otp_7227/1, otp_5494/1, otp_5644/1, otp_5878/1,
otp_5917/1, otp_6585/1, otp_6885/1, otp_10436/1,
@@ -80,6 +81,7 @@ all() ->
[{group, unused_vars_warn}, export_vars_warn,
shadow_vars, unused_import, unused_function,
unsafe_vars, unsafe_vars2, unsafe_vars_try, guard,
+ unsized_binary_in_bin_gen_pattern,
otp_4886, otp_4988, otp_5091, otp_5276, otp_5338,
otp_5362, otp_5371, otp_7227, otp_5494, otp_5644,
otp_5878, otp_5917, otp_6585, otp_6885, otp_10436, export_all,
@@ -1079,6 +1081,35 @@ unsafe_vars_try(Config) when is_list(Config) ->
?line [] = run(Config, Ts),
ok.
+unsized_binary_in_bin_gen_pattern(doc) ->
+ "Unsized binary fields are forbidden in patterns of bit string generators";
+unsized_binary_in_bin_gen_pattern(suite) -> [];
+unsized_binary_in_bin_gen_pattern(Config) when is_list(Config) ->
+ Ts = [{unsized_binary_in_bin_gen_pattern,
+ <<"t({bc,binary,Bin}) ->
+ << <<X,Tail/binary>> || <<X,Tail/binary>> <= Bin >>;
+ t({bc,bits,Bin}) ->
+ << <<X,Tail/bits>> || <<X,Tail/bits>> <= Bin >>;
+ t({bc,bitstring,Bin}) ->
+ << <<X,Tail/bits>> || <<X,Tail/bitstring>> <= Bin >>;
+ t({lc,binary,Bin}) ->
+ [ {X,Tail} || <<X,Tail/binary>> <= Bin ];
+ t({lc,bits,Bin}) ->
+ [ {X,Tail} || <<X,Tail/bits>> <= Bin ];
+ t({lc,bitstring,Bin}) ->
+ [ {X,Tail} || <<X,Tail/bitstring>> <= Bin ].">>,
+ [],
+ {errors,
+ [{2,erl_lint,unsized_binary_in_bin_gen_pattern},
+ {4,erl_lint,unsized_binary_in_bin_gen_pattern},
+ {6,erl_lint,unsized_binary_in_bin_gen_pattern},
+ {8,erl_lint,unsized_binary_in_bin_gen_pattern},
+ {10,erl_lint,unsized_binary_in_bin_gen_pattern},
+ {12,erl_lint,unsized_binary_in_bin_gen_pattern}],
+ []}}],
+ [] = run(Config, Ts),
+ ok.
+
guard(doc) ->
"OTP-4670. Guards, is_record in particular.";
guard(suite) -> [];