From bb561b0dd58a89489acb93bdf7b5386e7f306835 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Mon, 19 Jan 2015 15:10:34 +0100 Subject: core_lib: Handle patterns in map values core_lib:is_var_used/2 would not consider a variable used in the value of a map pattern such as: case Map of #{key := <<42:N>>} -> ok end Here the variable 'N' would not be considered used. It was assumed that there was no need to check map patterns at all, since maps currently don't support variables in keys. --- lib/compiler/test/bs_match_SUITE.erl | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'lib/compiler/test/bs_match_SUITE.erl') diff --git a/lib/compiler/test/bs_match_SUITE.erl b/lib/compiler/test/bs_match_SUITE.erl index 149b9bbb8f..10e3451e8f 100644 --- a/lib/compiler/test/bs_match_SUITE.erl +++ b/lib/compiler/test/bs_match_SUITE.erl @@ -34,7 +34,7 @@ otp_7188/1,otp_7233/1,otp_7240/1,otp_7498/1, 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]). + no_partition/1,calling_a_binary/1,binary_in_map/1]). -export([coverage_id/1,coverage_external_ignore/2]). @@ -59,7 +59,7 @@ groups() -> matching_and_andalso,otp_7188,otp_7233,otp_7240, otp_7498,match_string,zero_width,bad_size,haystack, cover_beam_bool,matched_out_size,follow_fail_branch, - no_partition,calling_a_binary]}]. + no_partition,calling_a_binary,binary_in_map]}]. init_per_suite(Config) -> @@ -1189,6 +1189,26 @@ call_binary(<<>>, Acc) -> call_binary(<>, Acc) -> T(<>). +binary_in_map(Config) when is_list(Config) -> + ok = match_binary_in_map(#{key => <<42:8>>}), + {'EXIT',{{badmatch,#{key := 1}},_}} = + (catch match_binary_in_map(#{key => 1})), + {'EXIT',{{badmatch,#{key := <<1023:16>>}},_}} = + (catch match_binary_in_map(#{key => <<1023:16>>})), + {'EXIT',{{badmatch,#{key := <<1:8>>}},_}} = + (catch match_binary_in_map(#{key => <<1:8>>})), + {'EXIT',{{badmatch,not_a_map},_}} = + (catch match_binary_in_map(not_a_map)), + ok. + +match_binary_in_map(Map) -> + case 8 of + N -> + #{key := <<42:N>>} = Map, + ok + end. + + check(F, R) -> R = F(). -- cgit v1.2.3