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author | Björn Gustavsson <bjorn@erlang.org> | 2015-11-19 12:13:21 +0100 |
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committer | Björn Gustavsson <bjorn@erlang.org> | 2015-11-20 14:24:57 +0100 |
commit | d4bb044cb5359c6d4bffe3efcb8256cf7199bdf3 (patch) | |
tree | 4cfb696d78ed911a9d04746a3b7c10a80bdb1950 /lib | |
parent | d4a3296ba3117315343057715ee428490e992ef0 (diff) | |
download | otp-d4bb044cb5359c6d4bffe3efcb8256cf7199bdf3.tar.gz otp-d4bb044cb5359c6d4bffe3efcb8256cf7199bdf3.tar.bz2 otp-d4bb044cb5359c6d4bffe3efcb8256cf7199bdf3.zip |
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.erl | 6 | ||||
-rw-r--r-- | lib/compiler/test/bs_match_SUITE.erl | 22 |
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(). |