File 0261-dialyzer-Fix-a-crash.patch of Package erlang
From 120760b543159d36d88f1feb204ff84c74306515 Mon Sep 17 00:00:00 2001
From: Hans Bolinder <hasse@erlang.org>
Date: Wed, 7 Feb 2018 15:16:15 +0100
Subject: [PATCH] dialyzer: Fix a crash
---
lib/dialyzer/src/dialyzer_dataflow.erl | 7 +++++++
lib/dialyzer/test/small_SUITE_data/results/record_match | 3 +++
lib/dialyzer/test/small_SUITE_data/src/record_match.erl | 17 +++++++++++++++++
3 files changed, 27 insertions(+)
create mode 100644 lib/dialyzer/test/small_SUITE_data/results/record_match
create mode 100644 lib/dialyzer/test/small_SUITE_data/src/record_match.erl
diff --git a/lib/dialyzer/src/dialyzer_dataflow.erl b/lib/dialyzer/src/dialyzer_dataflow.erl
index f6433a807d..fca5b74a9e 100644
--- a/lib/dialyzer/src/dialyzer_dataflow.erl
+++ b/lib/dialyzer/src/dialyzer_dataflow.erl
@@ -1235,6 +1235,13 @@ handle_tuple(Tree, Map, State) ->
State2 = state__add_warning(State1, ?WARN_OPAQUE,
Tree, Msg),
{State2, Map1, t_none()};
+ {error, record, ErrorPat, ErrorType, _} ->
+ Msg = {record_match,
+ [format_patterns(ErrorPat),
+ format_type(ErrorType, State1)]},
+ State2 = state__add_warning(State1, ?WARN_MATCHING,
+ Tree, Msg),
+ {State2, Map1, t_none()};
{Map2, ETypes} ->
{State1, Map2, t_tuple(ETypes)}
end
diff --git a/lib/dialyzer/test/small_SUITE_data/results/record_match b/lib/dialyzer/test/small_SUITE_data/results/record_match
new file mode 100644
index 0000000000..a0dd6f560a
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/results/record_match
@@ -0,0 +1,3 @@
+
+record_match.erl:16: Function select/0 has no local return
+record_match.erl:17: Matching of pattern {'b_literal', 'undefined'} tagged with a record name violates the declared type of #b_local{} | #b_remote{}
diff --git a/lib/dialyzer/test/small_SUITE_data/src/record_match.erl b/lib/dialyzer/test/small_SUITE_data/src/record_match.erl
new file mode 100644
index 0000000000..8e9b91937f
--- /dev/null
+++ b/lib/dialyzer/test/small_SUITE_data/src/record_match.erl
@@ -0,0 +1,17 @@
+-module(record_match).
+
+-export([select/0]).
+
+-record(b_literal, {val}).
+-record(b_remote, {mod,name,arity}).
+-record(b_local, {name,arity}).
+
+-type b_remote() :: #b_remote{}.
+-type b_local() :: #b_local{}.
+
+-type argument() :: b_remote() | b_local().
+
+-record(b_set, {args=[] :: [argument()]}).
+
+select() ->
+ #b_set{args=[#b_remote{},#b_literal{}]}.
--
2.16.1