https://git.ruby-lang.org/ruby.git/commit/?id=1eb8eb55c2

From 1eb8eb55c27b19e36d5bd23ce27f7ec2b9a7f521 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 12 Jan 2021 17:24:43 +0900
Subject: Convert time component strings to integers more strictly

https://bugs.ruby-lang.org/issues/17485#change-89871

diff --git a/test/ruby/test_time.rb b/test/ruby/test_time.rb
index e49753e..e5da0d6 100644
--- a/test/ruby/test_time.rb
+++ b/test/ruby/test_time.rb
@@ -46,6 +46,7 @@ class TestTime < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_time.rb#L46
     t = Time.new(*tm, "-12:00")
     assert_equal([2001,2,28,23,59,30,-43200], [t.year, t.month, t.mday, t.hour, t.min, t.sec, t.gmt_offset], bug4090)
     assert_raise(ArgumentError) { Time.new(2000,1,1, 0,0,0, "+01:60") }
+    assert_raise(ArgumentError) { Time.new(2021, 1, 1, "+09:99") }
   end
 
   def test_time_add()
diff --git a/time.c b/time.c
index a395274..e7a211b 100644
--- a/time.c
+++ b/time.c
@@ -2793,7 +2793,7 @@ static int https://github.com/ruby/ruby/blob/trunk/time.c#L2793
 obj2int(VALUE obj)
 {
     if (RB_TYPE_P(obj, T_STRING)) {
-	obj = rb_str_to_inum(obj, 10, FALSE);
+	obj = rb_str_to_inum(obj, 10, TRUE);
     }
 
     return NUM2INT(obj);
@@ -2815,7 +2815,7 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/time.c#L2815
 obj2vint(VALUE obj)
 {
     if (RB_TYPE_P(obj, T_STRING)) {
-	obj = rb_str_to_inum(obj, 10, FALSE);
+	obj = rb_str_to_inum(obj, 10, TRUE);
     }
     else {
         obj = rb_to_int(obj);
@@ -2830,7 +2830,7 @@ obj2subsecx(VALUE obj, VALUE *subsecx) https://github.com/ruby/ruby/blob/trunk/time.c#L2830
     VALUE subsec;
 
     if (RB_TYPE_P(obj, T_STRING)) {
-	obj = rb_str_to_inum(obj, 10, FALSE);
+	obj = rb_str_to_inum(obj, 10, TRUE);
         *subsecx = INT2FIX(0);
     }
     else {
@@ -2844,7 +2844,7 @@ static VALUE https://github.com/ruby/ruby/blob/trunk/time.c#L2844
 usec2subsecx(VALUE obj)
 {
     if (RB_TYPE_P(obj, T_STRING)) {
-	obj = rb_str_to_inum(obj, 10, FALSE);
+	obj = rb_str_to_inum(obj, 10, TRUE);
     }
 
     return mulquov(num_exact(obj), INT2FIX(TIME_SCALE), INT2FIX(1000000));
-- 
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