From ffe582b55910863462673163f984030ff13b34b7 Mon Sep 17 00:00:00 2001 From: Hans Bolinder Date: Thu, 20 Sep 2012 16:36:32 +0200 Subject: dialyzer: Do not output warnings for unused funs Dialyzer no longer outputs warnings for unused anonymous functions ("funs"). Warnings are still output for unused functions. Funs in functions with -nowarn_unused_function attributes generated warnings for unused functions. Unused list comprehensions also generated warnings for unused funs. --- lib/dialyzer/src/dialyzer.erl | 4 +--- lib/dialyzer/src/dialyzer_dataflow.erl | 2 +- lib/dialyzer/test/r9c_SUITE_data/results/asn1 | 4 ---- lib/dialyzer/test/small_SUITE_data/results/fun_ref_match | 2 -- 4 files changed, 2 insertions(+), 10 deletions(-) diff --git a/lib/dialyzer/src/dialyzer.erl b/lib/dialyzer/src/dialyzer.erl index 3e3c12405f..d875c45c4a 100644 --- a/lib/dialyzer/src/dialyzer.erl +++ b/lib/dialyzer/src/dialyzer.erl @@ -2,7 +2,7 @@ %%----------------------------------------------------------------------- %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2006-2011. All Rights Reserved. +%% Copyright Ericsson AB 2006-2012. All Rights Reserved. %% %% The contents of this file are subject to the Erlang Public License, %% Version 1.1, (the "License"); you may not use this file except in @@ -380,8 +380,6 @@ message_to_string({pattern_match_cov, [Pat, Type]}) -> message_to_string({unmatched_return, [Type]}) -> io_lib:format("Expression produces a value of type ~s," " but this value is unmatched\n", [Type]); -message_to_string({unused_fun, []}) -> - io_lib:format("Function will never be called\n", []); message_to_string({unused_fun, [F, A]}) -> io_lib:format("Function ~w/~w will never be called\n", [F, A]); %%----- Warnings for specs and contracts ------------------- diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl index 7131633da1..f40bb2d395 100644 --- a/lib/dialyzer/src/dialyzer_dataflow.erl +++ b/lib/dialyzer/src/dialyzer_dataflow.erl @@ -2806,7 +2806,7 @@ state__get_warnings(#state{tree_map = TreeMap, fun_tab = FunTab, true -> {Warn, Msg} = case dialyzer_callgraph:lookup_name(FunLbl, Callgraph) of - error -> {true, {unused_fun, []}}; + error -> {false, {}}; {ok, {_M, F, A} = MFA} -> {not sets:is_element(MFA, NoWarnUnused), {unused_fun, [F, A]}} diff --git a/lib/dialyzer/test/r9c_SUITE_data/results/asn1 b/lib/dialyzer/test/r9c_SUITE_data/results/asn1 index 292275dd6e..c11105b76d 100644 --- a/lib/dialyzer/test/r9c_SUITE_data/results/asn1 +++ b/lib/dialyzer/test/r9c_SUITE_data/results/asn1 @@ -68,7 +68,6 @@ asn1rt_check.erl:100: The variable _ can never match since previous clauses comp asn1rt_check.erl:85: The variable _ can never match since previous clauses completely covered the type [any()] asn1rt_driver_handler.erl:32: The pattern 'already_done' can never match the type {'error',_} asn1rt_per.erl:1065: The pattern {'BMPString', {'octets', Ol}} can never match the type {_,[{'bits',1 | 2 | 4 | 8 | 16 | 32,_}]} -asn1rt_per.erl:1066: Function will never be called asn1rt_per.erl:1231: The call erlang:'not'('implemented') will never return since it differs in the 1st argument from the success typing arguments: (boolean()) asn1rt_per.erl:1233: The call erlang:'not'('implemented') will never return since it differs in the 1st argument from the success typing arguments: (boolean()) asn1rt_per.erl:1235: The call erlang:'not'('implemented') will never return since it differs in the 1st argument from the success typing arguments: (boolean()) @@ -76,7 +75,6 @@ asn1rt_per.erl:1237: The call erlang:'not'('implemented') will never return sinc asn1rt_per.erl:989: The pattern <_C, 'true', _Val> can never match the type <_,'false',_> asn1rt_per_bin.erl:1361: The pattern <_, 'true', _> can never match the type <_,'false',_> asn1rt_per_bin.erl:1436: The pattern {'BMPString', {'octets', Ol}} can never match the type {'BMPString' | 'IA5String' | 'NumericString' | 'PrintableString' | 'UniversalString' | 'VisibleString',[{'bits',1 | 2 | 4 | 8 | 16 | 32,_}]} -asn1rt_per_bin.erl:1437: Function will never be called asn1rt_per_bin.erl:161: The call asn1rt_per_bin:getbit({0,maybe_improper_list()}) will never return since it differs in the 1st argument from the success typing arguments: (<<_:8,_:_*8>> | {non_neg_integer(),<<_:1,_:_*1>>}) asn1rt_per_bin.erl:1812: The pattern {Name, Val} can never match since previous clauses completely covered the type any() asn1rt_per_bin.erl:2106: Cons will produce an improper list since its 2nd argument is binary() @@ -94,7 +92,6 @@ asn1rt_per_bin.erl:487: The variable _ can never match since previous clauses co asn1rt_per_bin.erl:498: The variable _ can never match since previous clauses completely covered the type integer() asn1rt_per_bin_rt2ct.erl:152: The call asn1rt_per_bin_rt2ct:getbit({0,maybe_improper_list()}) will never return since it differs in the 1st argument from the success typing arguments: (<<_:8,_:_*8>> | {non_neg_integer(),<<_:1,_:_*1>>}) asn1rt_per_bin_rt2ct.erl:1533: The pattern {'BMPString', {'octets', Ol}} can never match the type {_,[[any(),...]]} -asn1rt_per_bin_rt2ct.erl:1534: Function will never be called asn1rt_per_bin_rt2ct.erl:1875: The pattern {Name, Val} can never match since previous clauses completely covered the type any() asn1rt_per_bin_rt2ct.erl:443: The variable _ can never match since previous clauses completely covered the type integer() asn1rt_per_bin_rt2ct.erl:464: The variable _ can never match since previous clauses completely covered the type integer() @@ -103,4 +100,3 @@ asn1rt_per_bin_rt2ct.erl:484: The variable _ can never match since previous clau asn1rt_per_bin_rt2ct.erl:495: The variable _ can never match since previous clauses completely covered the type integer() asn1rt_per_v1.erl:1209: The pattern <_, 'true', _> can never match the type <_,'false',_> asn1rt_per_v1.erl:1290: The pattern {'BMPString', {'octets', Ol}} can never match the type {'BMPString' | 'IA5String' | 'NumericString' | 'PrintableString' | 'UniversalString' | 'VisibleString',[{'bits',1 | 2 | 4 | 8 | 16 | 32,_}]} -asn1rt_per_v1.erl:1291: Function will never be called diff --git a/lib/dialyzer/test/small_SUITE_data/results/fun_ref_match b/lib/dialyzer/test/small_SUITE_data/results/fun_ref_match index 60b34530b4..e69de29bb2 100644 --- a/lib/dialyzer/test/small_SUITE_data/results/fun_ref_match +++ b/lib/dialyzer/test/small_SUITE_data/results/fun_ref_match @@ -1,2 +0,0 @@ - -fun_ref_match.erl:14: Function will never be called -- cgit v1.2.3