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authorBjörn Gustavsson <bjorn@erlang.org>2015-11-19 12:13:21 +0100
committerBjörn Gustavsson <bjorn@erlang.org>2015-11-20 14:24:57 +0100
commitd4bb044cb5359c6d4bffe3efcb8256cf7199bdf3 (patch)
tree4cfb696d78ed911a9d04746a3b7c10a80bdb1950 /lib
parentd4a3296ba3117315343057715ee428490e992ef0 (diff)
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Fix missing filename and line number in warning
When the 'bin_opt_info' is given, warnings without filenames and line numbers could sometimes be produced: no_file: Warning: INFO: matching non-variables after a previous clause matching a variable will prevent delayed sub binary optimization The reason for the missing information is that #c_alias{} records lack location information. There are several ways to fix the problem. The easiest seems to be to get the location information from the code). Noticed-by: José Valim
Diffstat (limited to 'lib')
-rw-r--r--lib/compiler/src/sys_core_fold.erl6
-rw-r--r--lib/compiler/test/bs_match_SUITE.erl22
2 files changed, 23 insertions, 5 deletions
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index 27d023d067..65699ccda9 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -3091,12 +3091,12 @@ bsm_ensure_no_partition_2([#c_var{name=V}|Ps], N, G, Vstate, S) ->
bsm_ensure_no_partition_2([_|Ps], N, G, _, S) ->
bsm_ensure_no_partition_2(Ps, N-1, G, bin_argument_order, S).
-bsm_ensure_no_partition_after([#c_clause{pats=Ps}|Cs], Pos) ->
+bsm_ensure_no_partition_after([#c_clause{pats=Ps}=C|Cs], Pos) ->
case nth(Pos, Ps) of
#c_var{} ->
bsm_ensure_no_partition_after(Cs, Pos);
- P ->
- bsm_problem(P, bin_partition)
+ _ ->
+ bsm_problem(C, bin_partition)
end;
bsm_ensure_no_partition_after([], _) -> ok.
diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl
index 6e138b0a43..b4601b0798 100644
--- a/lib/compiler/test/bs_match_SUITE.erl
+++ b/lib/compiler/test/bs_match_SUITE.erl
@@ -36,7 +36,7 @@
match_string/1,zero_width/1,bad_size/1,haystack/1,
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]).
+ match_string_opt/1,map_and_binary/1]).
-export([coverage_id/1,coverage_external_ignore/2]).
@@ -62,7 +62,7 @@ groups() ->
otp_7498,match_string,zero_width,bad_size,haystack,
cover_beam_bool,matched_out_size,follow_fail_branch,
no_partition,calling_a_binary,binary_in_map,
- match_string_opt]}].
+ match_string_opt,map_and_binary]}].
init_per_suite(Config) ->
@@ -1225,6 +1225,24 @@ match_string_opt(Config) when is_list(Config) ->
do_match_string_opt({<<1>>,{v,V}}=T) ->
{x,V,T}.
+%% If 'bin_opt_info' was given the warning would lack filename
+%% and line number.
+
+map_and_binary(_Config) ->
+ {<<"10">>,<<"37">>,<<"am">>} = do_map_and_binary(<<"10:37am">>),
+ Map1 = #{time => "noon"},
+ {ok,Map1} = do_map_and_binary(Map1),
+ Map2 = #{hour => 8, min => 42},
+ {8,42,Map2} = do_map_and_binary(Map2),
+ ok.
+
+do_map_and_binary(<<Hour:2/bytes, $:, Min:2/bytes, Rest/binary>>) ->
+ {Hour, Min, Rest};
+do_map_and_binary(#{time := _} = T) ->
+ {ok, T};
+do_map_and_binary(#{hour := Hour, min := Min} = T) ->
+ {Hour, Min, T}.
+
check(F, R) ->
R = F().