File 0112-typer-Correct-broken-handling-of-contract-... of Package erlang

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File 0112-typer-Correct-broken-handling-of-contract-violations.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

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From 57cbb37d52d37afa2a37734c53cb851f2aeeb868 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Wed, 21 Sep 2022 14:31:32 +0200
Subject: [PATCH] typer: Correct broken handling of contract violations

---
 lib/dialyzer/src/typer_core.erl   |  2 +-
 lib/dialyzer/test/typer_SUITE.erl | 29 +++++++++++++++++++++++++++--
 2 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/lib/dialyzer/src/typer_core.erl b/lib/dialyzer/src/typer_core.erl
index 408cd0f1d6..1556d0b09b 100644
--- a/lib/dialyzer/src/typer_core.erl
+++ b/lib/dialyzer/src/typer_core.erl
@@ -438,7 +438,7 @@ get_type({{M, F, A} = MFA, Range, Arg}, CodeServer, Records, Analysis) ->
           {{F, A}, {contract, Contract}};
         {error, {overlapping_contract, []}} ->
           {{F, A}, {contract, Contract}};
-        {error, invalid_contract} ->
+        {error, {invalid_contract, _}} ->
           CString = dialyzer_contracts:contract_to_string(Contract),
           SigString = dialyzer_utils:format_sig(Sig, Records),
           Msg = io_lib:format("Error in contract of function ~w:~tw/~w\n"
diff --git a/lib/dialyzer/test/typer_SUITE.erl b/lib/dialyzer/test/typer_SUITE.erl
index 2ad205d880..661357d383 100644
--- a/lib/dialyzer/test/typer_SUITE.erl
+++ b/lib/dialyzer/test/typer_SUITE.erl
@@ -21,14 +21,16 @@
 
 -export([all/0,suite/0,groups/0,init_per_suite/1,end_per_suite/1,
          init_per_group/2,end_per_group/2,
-         smoke/1]).
+         smoke/1,
+         contract_violation/1]).
 
 -include_lib("common_test/include/ct.hrl").
 
 suite() -> [{ct_hooks,[ts_install_cth]}].
 
 all() ->
-    [smoke].
+    [smoke,
+     contract_violation].
 
 groups() ->
     [].
@@ -66,6 +68,29 @@ smoke(Config) ->
     run(Config, Args, Src, Res),
     ok.
 
+contract_violation(Config) ->
+    OutDir = proplists:get_value(priv_dir, Config),
+    case dialyzer_common:check_plt(OutDir) of
+        fail ->
+            {skip, "Plt creation/check failed."};
+        ok ->
+            Code = <<"-module(typer_test_module).
+                   -export([foo/1]).
+                   -spec foo(boolean()) -> string().
+                   foo(N) ->
+                       integer_to_list(N).">>,
+            PrivDir = proplists:get_value(priv_dir, Config),
+            Src = filename:join(PrivDir, "typer_test_module.erl"),
+            ok = file:write_file(Src, Code),
+            Args = "--plt " ++ PrivDir ++ "dialyzer_plt",
+            Res = ["^typer: Error in contract of function typer_test_module:foo/1",
+                   "^\t The contract is: \\(boolean\\(\\)\\) -> string\\(\\)",
+                   "^\t but the inferred signature is: \\(integer\\(\\)\\) -> string\\(\\)",
+                   "_ERROR_"],
+            run(Config, Args, Src, Res),
+            ok
+    end.
+
 typer() ->
     case os:find_executable("typer") of
         false ->
-- 
2.35.3

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File 0112-typer-Correct-broken-handling-of-contract-violations.patch of Package erlang (Revision b1ddc78860c1f178c6361caad002e77d)

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