ICU-22750 Fix Floating-point-exception in icu::Calendar::roll

See #2979

icu4c/source/i18n/calendar.cpp

@@ -1762,6 +1762,9 @@ void Calendar::roll(UCalendarDateFields field, int32_t amount, UErrorCode& statu
  {
  int32_t min = getActualMinimum(field,status);
  int32_t max = getActualMaximum(field,status);
+ if (U_FAILURE(status)) {
+ return;
+ }
  int32_t gap = max - min + 1;
 
  int64_t value = internalGet(field);

icu4c/source/test/intltest/caltest.cpp

@@ -209,6 +209,7 @@ void CalendarTest::runIndexedTest( int32_t index, UBool exec, const char* &name,
 
  TESTCASE_AUTO(TestAddOverflow);
 
+ TESTCASE_AUTO(Test22750Roll);
 
  TESTCASE_AUTO(TestChineseCalendarComputeMonthStart);
 
@@ -5929,6 +5930,25 @@ void CalendarTest::TestAddOverflow() {
  }
  }
 }
+
+void CalendarTest::Test22750Roll() {
+ UErrorCode status = U_ZERO_ERROR;
+ Locale l(Locale::getRoot());
+ std::unique_ptr<icu::StringEnumeration> enumeration(
+ Calendar::getKeywordValuesForLocale("calendar", l, false, status));
+ // Test every calendar
+ for (const char* name = enumeration->next(nullptr, status);
+ U_SUCCESS(status) && name != nullptr;
+ name = enumeration->next(nullptr, status)) {
+ UErrorCode status2 = U_ZERO_ERROR;
+ l.setKeywordValue("calendar", name, status2);
+ LocalPointer<Calendar> calendar(Calendar::createInstance(l, status2));
+ if (failure(status2, "Calendar::createInstance")) return;
+ calendar->add(UCAL_DAY_OF_WEEK_IN_MONTH, 538976288, status2);
+ calendar->roll(UCAL_DATE, 538976288, status2);
+ }
+}
+
 #endif /* #if !UCONFIG_NO_FORMATTING */
 
 //eof

icu4c/source/test/intltest/caltest.h

@@ -347,6 +347,9 @@ class CalendarTest: public CalendarTimeZoneTest {
  void Test22633AddTwiceGetTimeOverflow();
  void Test22633RollTwiceGetTimeOverflow();
  void Test22730JapaneseOverflow();
+
+ void Test22750Roll();
+
  void RunTestOnCalendars(void(TestFunc)(Calendar*, UCalendarDateFields));
 
  void verifyFirstDayOfWeek(const char* locale, UCalendarDaysOfWeek expected);