File 0206-dialyzer-Don-t-crash-when-specs-types-contain-emojis.patch of Package erlang

From 4ea15bcb9d9398c8ffa5edb00b83bea181b482a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20H=C3=B6gberg?= <john@erlang.org>
Date: Mon, 20 Sep 2021 12:25:36 +0200
Subject: [PATCH] dialyzer: Don't crash when specs/types contain emojis or
 similar

---
 lib/dialyzer/src/dialyzer.erl                            | 4 ++--
 lib/dialyzer/test/dialyzer_common.erl                    | 2 +-
 lib/dialyzer/test/opaque_SUITE_data/results/unicode      | 2 ++
 .../test/opaque_SUITE_data/src/unicode/exposer.erl       | 5 +++++
 .../test/opaque_SUITE_data/src/unicode/problematic.erl   | 9 +++++++++
 5 files changed, 19 insertions(+), 3 deletions(-)
 create mode 100644 lib/dialyzer/test/opaque_SUITE_data/results/unicode
 create mode 100644 lib/dialyzer/test/opaque_SUITE_data/src/unicode/exposer.erl
 create mode 100644 lib/dialyzer/test/opaque_SUITE_data/src/unicode/problematic.erl

diff --git a/lib/dialyzer/src/dialyzer.erl b/lib/dialyzer/src/dialyzer.erl
index 2fc0767a01..32dcb25544 100644
--- a/lib/dialyzer/src/dialyzer.erl
+++ b/lib/dialyzer/src/dialyzer.erl
@@ -725,14 +725,14 @@ pp_type(Type) ->
   Form = {attribute, erl_anno:new(0), type, {t, Type, []}},
   TypeDef = erl_pp:form(Form, [{quote_singleton_atom_types, true}]),
   {match, [S]} = re:run(TypeDef, <<"::\\s*(.*)\\.\\n*">>,
-                        [{capture, all_but_first, list}, dotall]),
+                        [{capture, all_but_first, list}, dotall, unicode]),
   S.
 
 pp_spec(Spec) ->
   Form = {attribute, erl_anno:new(0), spec, {{a,b,0}, Spec}},
   Sig = erl_pp:form(Form, [{quote_singleton_atom_types, true}]),
   {match, [S]} = re:run(Sig, <<"-spec a:b\\s*(.*)\\.\\n*">>,
-                        [{capture, all_but_first, list}, dotall]),
+                        [{capture, all_but_first, list}, dotall, unicode]),
   S.
 
 parse_types_and_literals(Src) ->
diff --git a/lib/dialyzer/test/dialyzer_common.erl b/lib/dialyzer/test/dialyzer_common.erl
index beaf126344..392c41306e 100644
--- a/lib/dialyzer/test/dialyzer_common.erl
+++ b/lib/dialyzer/test/dialyzer_common.erl
@@ -154,7 +154,7 @@ check(TestCase, Opts, Dir, OutDir) ->
 		_  ->
 		    case file:open(NewResFile,[?output_file_mode]) of
 			{ok, OutFile} ->
-			    io:format(OutFile,"\n~s",[Warns]),
+			    file:write(OutFile, [$\n, unicode:characters_to_binary(Warns)]),
 			    file:close(OutFile);
 			Other -> erlang:error(Other)
 		    end
diff --git a/lib/dialyzer/test/opaque_SUITE_data/results/unicode b/lib/dialyzer/test/opaque_SUITE_data/results/unicode
new file mode 100644
index 0000000000..9cdab6d60d
--- /dev/null
+++ b/lib/dialyzer/test/opaque_SUITE_data/results/unicode
@@ -0,0 +1,2 @@
+
+exposer.erl:5:26: The call problematic:'🔍'('bug') does not have an opaque term of type problematic:'🐛'() as 1st argument
diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/unicode/exposer.erl b/lib/dialyzer/test/opaque_SUITE_data/src/unicode/exposer.erl
new file mode 100644
index 0000000000..618f053532
--- /dev/null
+++ b/lib/dialyzer/test/opaque_SUITE_data/src/unicode/exposer.erl
@@ -0,0 +1,5 @@
+-module(exposer).
+
+-export(['💣'/0]).
+
+'💣'() -> problematic:'🔍'(bug).
diff --git a/lib/dialyzer/test/opaque_SUITE_data/src/unicode/problematic.erl b/lib/dialyzer/test/opaque_SUITE_data/src/unicode/problematic.erl
new file mode 100644
index 0000000000..c841b1a511
--- /dev/null
+++ b/lib/dialyzer/test/opaque_SUITE_data/src/unicode/problematic.erl
@@ -0,0 +1,9 @@
+-module(problematic).
+
+-opaque '🐛'() :: bug.
+-export_type(['🐛'/0]).
+
+-export(['🔍'/1]).
+
+-spec '🔍'('🐛'()) -> true.
+'🔍'(bug) -> true.
-- 
2.31.1