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authorBjörn Gustavsson <[email protected]>2016-06-02 06:40:09 +0200
committerBjörn Gustavsson <[email protected]>2016-06-02 15:49:56 +0200
commita04289a5f30f39b62c7d245f272f486cfd70e6a8 (patch)
treef3792edb6a5acf8afd0914df8f4135d250765117 /lib
parent5facb518a9ee2d756564eccd92a2c11f334d6282 (diff)
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Avoid the dreaded "no_file" in warnings
Add more filename/line number annotations while translating to Core Erlang in v3_core, and ensure that sys_core_fold retains existing annotations. The goal is to avoid that sys_core_fold generate warnings with "no_file" instead of a filename.
Diffstat (limited to 'lib')
-rw-r--r--lib/compiler/src/sys_core_fold.erl14
-rw-r--r--lib/compiler/src/v3_core.erl11
-rw-r--r--lib/compiler/test/core_fold_SUITE.erl49
3 files changed, 61 insertions, 13 deletions
diff --git a/lib/compiler/src/sys_core_fold.erl b/lib/compiler/src/sys_core_fold.erl
index dbc27db377..e0de50f3ae 100644
--- a/lib/compiler/src/sys_core_fold.erl
+++ b/lib/compiler/src/sys_core_fold.erl
@@ -786,7 +786,7 @@ fold_lit_args(Call, Module, Name, Args0) ->
Val ->
case cerl:is_literal_term(Val) of
true ->
- cerl:abstract(Val);
+ cerl:ann_abstract(cerl:get_ann(Call), Val);
false ->
%% Successful evaluation, but it was not possible
%% to express the computed value as a literal.
@@ -2176,24 +2176,22 @@ opt_not_in_let_1(V, Call, Body) ->
#c_call{module=#c_literal{val=erlang},
name=#c_literal{val='not'},
args=[#c_var{name=V}]} ->
- opt_not_in_let_2(Body);
+ opt_not_in_let_2(Body, Call);
_ ->
no
end.
-opt_not_in_let_2(#c_case{clauses=Cs0}=Case) ->
+opt_not_in_let_2(#c_case{clauses=Cs0}=Case, NotCall) ->
Vars = make_vars([], 1),
- Body = #c_call{module=#c_literal{val=erlang},
- name=#c_literal{val='not'},
- args=Vars},
+ Body = NotCall#c_call{args=Vars},
Cs = [begin
Let = #c_let{vars=Vars,arg=B,body=Body},
C#c_clause{body=opt_not_in_let(Let)}
end || #c_clause{body=B}=C <- Cs0],
{yes,Case#c_case{clauses=Cs}};
-opt_not_in_let_2(#c_call{}=Call0) ->
+opt_not_in_let_2(#c_call{}=Call0, _NotCall) ->
invert_call(Call0);
-opt_not_in_let_2(_) -> no.
+opt_not_in_let_2(_, _) -> no.
invert_call(#c_call{module=#c_literal{val=erlang},
name=#c_literal{val=Name0},
diff --git a/lib/compiler/src/v3_core.erl b/lib/compiler/src/v3_core.erl
index a3b0236134..d71411de80 100644
--- a/lib/compiler/src/v3_core.erl
+++ b/lib/compiler/src/v3_core.erl
@@ -868,12 +868,16 @@ try_exception(Ecs0, St0) ->
{Evs,St1} = new_vars(3, St0), % Tag, Value, Info
{Ecs1,Ceps,St2} = clauses(Ecs0, St1),
[_,Value,Info] = Evs,
- Ec = #iclause{anno=#a{anno=[compiler_generated]},
+ LA = case Ecs1 of
+ [] -> [];
+ [C|_] -> get_lineno_anno(C)
+ end,
+ Ec = #iclause{anno=#a{anno=[compiler_generated|LA]},
pats=[c_tuple(Evs)],guard=[#c_literal{val=true}],
body=[#iprimop{anno=#a{}, %Must have an #a{}
name=#c_literal{val=raise},
args=[Info,Value]}]},
- Hs = [#icase{anno=#a{},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
+ Hs = [#icase{anno=#a{anno=LA},args=[c_tuple(Evs)],clauses=Ecs1,fc=Ec}],
{Evs,Ceps++Hs,St2}.
try_after(As, St0) ->
@@ -2098,7 +2102,8 @@ upattern(#c_var{name=V}=Var, Ks, St0) ->
true ->
{N,St1} = new_var_name(St0),
New = #c_var{name=N},
- Test = #icall{anno=#a{us=add_element(N, [V])},
+ LA = get_lineno_anno(Var),
+ Test = #icall{anno=#a{anno=LA,us=add_element(N, [V])},
module=#c_literal{val=erlang},
name=#c_literal{val='=:='},
args=[New,Var]},
diff --git a/lib/compiler/test/core_fold_SUITE.erl b/lib/compiler/test/core_fold_SUITE.erl
index 442b2d424c..376d2c8e9a 100644
--- a/lib/compiler/test/core_fold_SUITE.erl
+++ b/lib/compiler/test/core_fold_SUITE.erl
@@ -25,7 +25,8 @@
eq/1,nested_call_in_case/1,guard_try_catch/1,coverage/1,
unused_multiple_values_error/1,unused_multiple_values/1,
multiple_aliases/1,redundant_boolean_clauses/1,
- mixed_matching_clauses/1,unnecessary_building/1]).
+ mixed_matching_clauses/1,unnecessary_building/1,
+ no_no_file/1]).
-export([foo/0,foo/1,foo/2,foo/3]).
@@ -43,7 +44,8 @@ groups() ->
eq,nested_call_in_case,guard_try_catch,coverage,
unused_multiple_values_error,unused_multiple_values,
multiple_aliases,redundant_boolean_clauses,
- mixed_matching_clauses,unnecessary_building]}].
+ mixed_matching_clauses,unnecessary_building,
+ no_no_file]}].
init_per_suite(Config) ->
@@ -454,4 +456,47 @@ do_unnecessary_building_2({a,_,_}=T) ->
[_,_] = [T,none],
x}.
+%% This test tests that v3_core has provided annotations and that
+%% sys_core_fold retains them, so that warnings produced by
+%% sys_core_fold will have proper filenames and line numbers. Thus, no
+%% "no_file" warnings.
+no_no_file(_Config) ->
+ {'EXIT',{{case_clause,0},_}} = (catch source(true, any)),
+ surgery = (tim(#{reduction => any}))(),
+
+ false = soul(#{[] => true}),
+ {'EXIT',{{case_clause,true},_}} = (catch soul(#{[] => false})),
+
+ ok = experiment(),
+ ok.
+
+source(true, Activities) ->
+ case 0 of
+ Activities when [] ->
+ Activities
+ end.
+
+tim(#{reduction := Emergency}) ->
+ try
+ fun() -> surgery end
+ catch
+ _ when [] ->
+ planet
+ end.
+
+soul(#{[] := Properly}) ->
+ not case true of
+ Properly -> true;
+ Properly -> 0
+ end.
+
+experiment() ->
+ case kingdom of
+ _ ->
+ +case "map" of
+ _ -> 0.0
+ end
+ end,
+ ok.
+
id(I) -> I.