File 0788-Fix-error-report-for-large-integers-in-unicode-chara.patch of Package erlang

From d2560b13eb43d689addfcd9a7b422c20f97d958c Mon Sep 17 00:00:00 2001
From: Rickard Green <rickard@erlang.org>
Date: Tue, 1 Oct 2019 15:37:45 +0200
Subject: [PATCH] Fix error report for large integers in
 unicode:characters_to_*()

---
 erts/emulator/beam/erl_unicode.c  | 11 +++++++++++
 lib/stdlib/src/stdlib.app.src     |  2 +-
 lib/stdlib/test/unicode_SUITE.erl | 26 ++++++++++++++++++++++++--
 3 files changed, 36 insertions(+), 3 deletions(-)

diff --git a/erts/emulator/beam/erl_unicode.c b/erts/emulator/beam/erl_unicode.c
index 9fd3012888..86027a8b90 100644
--- a/erts/emulator/beam/erl_unicode.c
+++ b/erts/emulator/beam/erl_unicode.c
@@ -455,6 +455,17 @@ L_Again:   /* Restart with sublist, old listend was pushed on stack */
 			objp = list_val(ioterm);
 			obj = CAR(objp);
 		    }
+                } else if (is_big(obj)) {
+                    /*
+                     * This is obviously an error, but we
+                     * need do_build_utf8() to produce the
+                     * error; otherwise, we will generate
+                     * a badarg instead of the informative
+                     * error tuple.
+                     */
+		    DESTROY_ESTACK(stack);
+                    *costp = cost;
+                    return need;
 		} else {
 		    DESTROY_ESTACK(stack);
 		    *costp = cost;
diff --git a/lib/stdlib/test/unicode_SUITE.erl b/lib/stdlib/test/unicode_SUITE.erl
index e01ba3fbb0..ada79dbe65 100644
--- a/lib/stdlib/test/unicode_SUITE.erl
+++ b/lib/stdlib/test/unicode_SUITE.erl
@@ -33,7 +33,8 @@
 	 ex_binaries_errors_utf16_little/1,
 	 ex_binaries_errors_utf16_big/1,
 	 ex_binaries_errors_utf32_little/1,
-	 ex_binaries_errors_utf32_big/1]).
+	 ex_binaries_errors_utf32_big/1,
+	 huge_illegal_code_points/1]).
 
 suite() ->
     [{ct_hooks,[ts_install_cth]},
@@ -44,7 +45,8 @@ all() ->
      utf16_illegal_sequences_bif, random_lists, roundtrips,
      latin1, exceptions,
      binaries_errors_limit,
-     {group,binaries_errors}].
+     {group,binaries_errors},
+     huge_illegal_code_points].
 
 groups() -> 
     [{binaries_errors,[parallel],
@@ -919,6 +921,26 @@ normalize(_) ->
 	_ ->
 	    ok
     end.
+huge_illegal_code_points(Config) when is_list(Config) ->
+    LargeList = lists:duplicate(1024, $x),
+    Pre = ["ok part", [[LargeList]]],
+    Post = ["error tail", [[LargeList]]],
+    huge_illegal_code_points_aux(Pre, 1 bsl 27, Post),
+    huge_illegal_code_points_aux(Pre, 1 bsl 28, Post),
+    huge_illegal_code_points_aux(Pre, 1 bsl 32, Post),
+    huge_illegal_code_points_aux(Pre, 1 bsl 59, Post),
+    huge_illegal_code_points_aux(Pre, 1 bsl 60, Post),
+    huge_illegal_code_points_aux(Pre, 1 bsl 64, Post),
+    ok.
+
+huge_illegal_code_points_aux(Pre, Error, Post) ->
+    ErrorList = [Error|Post],
+    In = [Pre | ErrorList],
+    FlatPre = lists:flatten(Pre),
+    {error, FlatPre, ErrorList} = unicode:characters_to_list(In),
+    BinPre = list_to_binary(FlatPre),
+    {error, BinPre, ErrorList} = unicode:characters_to_binary(In),
+    ok.
 
 %%
 %% Diverse utilities
-- 
2.16.4