From 9daaf8b304c3c3878287683313c3530b0acad4b8 Mon Sep 17 00:00:00 2001
From: upstream <upstream@localhost>
Date: Fri, 4 Sep 2026 09:32:17 +0200
Subject: [PATCH] Upstream HangfireIO/Cronos state of the touched files before
 7c74681733

---
 src/Cronos/CronExpression.cs                  |  9 --------
 .../CronExpressionReverseFacts.cs             | 21 -------------------
 2 files changed, 30 deletions(-)

diff --git a/src/Cronos/CronExpression.cs b/src/Cronos/CronExpression.cs
index 0e7013f..9197940 100644
--- a/src/Cronos/CronExpression.cs
+++ b/src/Cronos/CronExpression.cs
@@ -995,15 +995,6 @@ namespace Cronos
             var lastDayOfMonth = CalendarHelper.GetDaysInMonth(year, month);
             var maxDay = dayLimit > lastDayOfMonth ? lastDayOfMonth : dayLimit;
 
-            // Rolling back past the 1st can drop maxDay below the first valid day,
-            // and the "*" fast path would then underflow into the previous month.
-            if (maxDay < CronField.DaysOfMonth.First)
-            {
-                day = default;
-                actualDay = default;
-                return false;
-            }
-
             if (HasFlag(CronExpressionFlag.NearestWeekday))
             {
                 day = HasFlag(CronExpressionFlag.DayOfMonthLast)
diff --git a/tests/Cronos.Tests/CronExpressionReverseFacts.cs b/tests/Cronos.Tests/CronExpressionReverseFacts.cs
index 940b050..437e9dd 100644
--- a/tests/Cronos.Tests/CronExpressionReverseFacts.cs
+++ b/tests/Cronos.Tests/CronExpressionReverseFacts.cs
@@ -125,27 +125,6 @@ namespace Cronos.Tests
             Assert.Equal(GetUtcDateTime(expectedString), previous);
         }
 
-        [Theory]
-
-        // Rolling back past midnight of the 1st must skip to the previous allowed
-        // month, not land in the preceding disallowed one.
-        [InlineData("0 17 * 7 *", "2017-07-01 14:00:00", "2016-07-31 17:00:00")]
-        [InlineData("37-57/3 17-21 * 7 *", "2017-07-01 14:20:00", "2016-07-31 21:55:00")]
-        [InlineData("0 0 * 3 *", "2020-03-01 00:00:00", "2019-03-31 00:00:00")]
-
-        // Control: an unrestricted month field must still roll back normally.
-        [InlineData("0 17 * * *", "2017-07-01 14:00:00", "2017-06-30 17:00:00")]
-        public void GetPreviousOccurrence_DoesNotReturnDayInDisallowedMonth_WhenTimeRollsBackPastFirstOfMonth(
-            string cronExpression, string fromString, string expectedString)
-        {
-            var expression = CronExpression.Parse(cronExpression, CronFormat.Standard);
-            var from = GetUtcDateTime(fromString);
-
-            var previous = expression.GetPreviousOccurrence(from, inclusive: false);
-
-            Assert.Equal(GetUtcDateTime(expectedString), previous);
-        }
-
         [Fact]
         public void GetPreviousOccurrence_ReturnsCorrectDate_WhenMacroExpressionHasJitterSeed()
         {