function_clause: {yaws, to_lower, ...}

[leoliu]

I saw this a couple of times in the report.log file and wonder if it is a bug?

=ERROR REPORT==== 26-Apr-2017::23:05:44 ===
Yaws process died: {function_clause,
                    [{yaws,to_lower,
                      [{'EXIT',
                        {function_clause,
                         [{yaws_api,'-fold_others/4-fun-0-',
                           [{http_error,
                             "\"Referer\": 152.77.237.37/mainFrame.htm\r\n"},
                            undefined],
                           [{file,"yaws_api.erl"},{line,1501}]},
                          {lists,foldl,3,[{file,"lists.erl"},{line,1263}]},
                          {yaws_api,get_header,2,
                           [{file,"yaws_api.erl"},{line,1484}]},
                          {yaws_server,body_method,4,
                           [{file,"yaws_server.erl"},{line,1709}]},
                          {yaws_server,aloop,4,
                           [{file,"yaws_server.erl"},{line,1249}]},
                          {yaws_server,acceptor0,2,
                           [{file,"yaws_server.erl"},{line,1072}]},
                          {proc_lib,init_p_do_apply,3,
                           [{file,"proc_lib.erl"},{line,247}]}]}}],
                      [{file,"yaws.erl"},{line,1136}]},
                     {yaws_server,body_method,4,
                      [{file,"yaws_server.erl"},{line,1713}]},
                     {yaws_server,aloop,4,
                      [{file,"yaws_server.erl"},{line,1249}]},
                     {yaws_server,acceptor0,2,
                      [{file,"yaws_server.erl"},{line,1072}]},
                     {proc_lib,init_p_do_apply,3,
                      [{file,"proc_lib.erl"},{line,247}]}]}

[vinoski]

Thanks. Yes, I think we can consider it a bug, since having this in the log doesn't seem helpful. I'll fix it.

[leoliu]

Thanks.