ICU-22633 Return error if era is out of range

icu4c/source/i18n/buddhcal.cpp

@@ -63,8 +63,11 @@ const char *BuddhistCalendar::getType() const
     return "buddhist";
 }
 
-int32_t BuddhistCalendar::handleGetExtendedYear()
+int32_t BuddhistCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     // EXTENDED_YEAR in BuddhistCalendar is a Gregorian year.
     // The default value of EXTENDED_YEAR is 1970 (Buddhist 2513)
     int32_t year;

icu4c/source/i18n/buddhcal.h

@@ -139,10 +139,11 @@ class BuddhistCalendar : public GregorianCalendar {
      * use the UCAL_EXTENDED_YEAR field or the UCAL_YEAR and supra-year fields (such
      * as UCAL_ERA) specific to the calendar system, depending on which set of
      * fields is newer.
+     * @param status
      * @return the extended year
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
     /**
      * Subclasses may override this method to compute several fields
      * specific to each calendar system.  

icu4c/source/i18n/calendar.cpp

@@ -2929,11 +2929,17 @@ void Calendar::validateField(UCalendarDateFields field, UErrorCode &status) {
     int32_t y;
     switch (field) {
     case UCAL_DAY_OF_MONTH:
-        y = handleGetExtendedYear();
+        y = handleGetExtendedYear(status);
+        if (U_FAILURE(status)) {
+           return;
+        }
         validateField(field, 1, handleGetMonthLength(y, internalGetMonth()), status);
         break;
     case UCAL_DAY_OF_YEAR:
-        y = handleGetExtendedYear();
+        y = handleGetExtendedYear(status);
+        if (U_FAILURE(status)) {
+           return;
+        }
         validateField(field, 1, handleGetYearLength(y), status);
         break;
     case UCAL_DAY_OF_WEEK_IN_MONTH:
@@ -3387,7 +3393,10 @@ int32_t Calendar::handleComputeJulianDay(UCalendarDateFields bestField, UErrorCo
     if (bestField == UCAL_WEEK_OF_YEAR && newerField(UCAL_YEAR_WOY, UCAL_YEAR) == UCAL_YEAR_WOY) {
         year = internalGet(UCAL_YEAR_WOY);
     } else {
-        year = handleGetExtendedYear();
+        year = handleGetExtendedYear(status);
+        if (U_FAILURE(status)) {
+           return 0;
+        }
     }
 
     internalSet(UCAL_EXTENDED_YEAR, year);

icu4c/source/i18n/chnsecal.cpp

@@ -222,7 +222,11 @@ int32_t ChineseCalendar::handleGetLimit(UCalendarDateFields field, ELimitType li
  * field as the continuous year count, depending on which is newer.
  * @stable ICU 2.8
  */
-int32_t ChineseCalendar::handleGetExtendedYear() {
+int32_t ChineseCalendar::handleGetExtendedYear(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
+
     int32_t year;
     if (newestStamp(UCAL_ERA, UCAL_YEAR, kUnset) <= fStamp[UCAL_EXTENDED_YEAR]) {
         year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1

icu4c/source/i18n/chnsecal.h

@@ -209,7 +209,7 @@ class U_I18N_API ChineseCalendar : public Calendar {
   virtual int32_t handleGetLimit(UCalendarDateFields field, ELimitType limitType) const override;
   virtual int32_t handleGetMonthLength(int32_t extendedYear, int32_t month) const override;
   virtual int64_t handleComputeMonthStart(int32_t eyear, int32_t month, UBool useMonth) const override;
-  virtual int32_t handleGetExtendedYear() override;
+  virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
   virtual void handleComputeFields(int32_t julianDay, UErrorCode &status) override;
   virtual const UFieldResolutionTable* getFieldResolutionTable() const override;
 

icu4c/source/i18n/coptccal.cpp

@@ -57,8 +57,11 @@ CopticCalendar::getType() const
 //-------------------------------------------------------------------------
 
 int32_t
-CopticCalendar::handleGetExtendedYear()
+CopticCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     int32_t eyear;
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
         eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
@@ -67,8 +70,11 @@ CopticCalendar::handleGetExtendedYear()
         int32_t era = internalGet(UCAL_ERA, CE);
         if (era == BCE) {
             eyear = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
-        } else {
+        } else if (era == CE){
             eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
+        } else {
+            status = U_ILLEGAL_ARGUMENT_ERROR;
+            return 0;
         }
     }
     return eyear;

icu4c/source/i18n/coptccal.h

@@ -177,7 +177,7 @@ class CopticCalendar : public CECalendar {
      * Return the extended year defined by the current fields.
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
     /**
      * Compute fields from the JD

icu4c/source/i18n/ethpccal.cpp

@@ -56,8 +56,11 @@ EthiopicCalendar::getType() const
 //-------------------------------------------------------------------------
 
 int32_t
-EthiopicCalendar::handleGetExtendedYear()
+EthiopicCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     // Ethiopic calendar uses EXTENDED_YEAR aligned to
     // Amelete Hihret year always.
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
@@ -181,8 +184,11 @@ EthiopicAmeteAlemCalendar::getType() const
 }
 
 int32_t
-EthiopicAmeteAlemCalendar::handleGetExtendedYear()
+EthiopicAmeteAlemCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     // Ethiopic calendar uses EXTENDED_YEAR aligned to
     // Amelete Hihret year always.
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {

icu4c/source/i18n/ethpccal.h

@@ -169,7 +169,7 @@ class EthiopicCalendar : public CECalendar {
      *             1       AMETE_MIHRET     1
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
     /**
      * Compute fields from the JD
@@ -341,7 +341,7 @@ class EthiopicAmeteAlemCalendar : public EthiopicCalendar {
      *             1       AMETE_ALEM  5501
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
     /**
      * Compute fields from the JD

icu4c/source/i18n/gregocal.cpp

@@ -1158,7 +1158,10 @@ int32_t GregorianCalendar::getActualMaximum(UCalendarDateFields field, UErrorCod
 }
 
 
-int32_t GregorianCalendar::handleGetExtendedYear() {
+int32_t GregorianCalendar::handleGetExtendedYear(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     // the year to return
     int32_t year = kEpochYear;
 
@@ -1184,8 +1187,11 @@ int32_t GregorianCalendar::handleGetExtendedYear() {
             int32_t era = internalGet(UCAL_ERA, AD);
             if (era == BC) {
                 year = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
-            } else {
+            } else if (era == AD) {
                 year = internalGet(UCAL_YEAR, kEpochYear);
+            } else {
+                status = U_ILLEGAL_ARGUMENT_ERROR;
+                return 0;
             }
         }
         break;

icu4c/source/i18n/hebrwcal.cpp

@@ -546,7 +546,10 @@ int32_t HebrewCalendar::handleGetYearLength(int32_t eyear) const {
 
 void HebrewCalendar::validateField(UCalendarDateFields field, UErrorCode &status) {
     if ((field == UCAL_MONTH || field == UCAL_ORDINAL_MONTH)
-        && !isLeapYear(handleGetExtendedYear()) && internalGetMonth() == ADAR_1) {
+        && !isLeapYear(handleGetExtendedYear(status)) && internalGetMonth() == ADAR_1) {
+        if (U_FAILURE(status)) {
+            return;
+        }
         status = U_ILLEGAL_ARGUMENT_ERROR;
         return;
     }
@@ -636,7 +639,10 @@ void HebrewCalendar::handleComputeFields(int32_t julianDay, UErrorCode &status)
 /**
 * @internal
 */
-int32_t HebrewCalendar::handleGetExtendedYear() {
+int32_t HebrewCalendar::handleGetExtendedYear(UErrorCode& status ) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     int32_t year;
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
         year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
@@ -783,7 +789,9 @@ int32_t HebrewCalendar::internalGetMonth() const {
         int32_t ordinalMonth = internalGet(UCAL_ORDINAL_MONTH);
         HebrewCalendar *nonConstThis = (HebrewCalendar*)this; // cast away const
 
-        int32_t year = nonConstThis->handleGetExtendedYear();
+        UErrorCode status = U_ZERO_ERROR;
+        int32_t year = nonConstThis->handleGetExtendedYear(status);
+        U_ASSERT(U_SUCCESS(status));
         return ordinalMonth + (((!isLeapYear(year)) && (ordinalMonth > ADAR_1)) ? 1: 0);
     }
     return Calendar::internalGetMonth();

icu4c/source/i18n/hebrwcal.h

@@ -350,10 +350,11 @@ class U_I18N_API HebrewCalendar : public Calendar {
      * use the UCAL_EXTENDED_YEAR field or the UCAL_YEAR and supra-year fields (such
      * as UCAL_ERA) specific to the calendar system, depending on which set of
      * fields is newer.
+     * @param status
      * @return the extended year
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
     /**
      * Return the Julian day number of day before the first day of the
      * given month in the given extended year.  Subclasses should override

icu4c/source/i18n/indiancal.cpp

@@ -228,7 +228,10 @@ int64_t IndianCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, UB
 // Functions for converting from milliseconds to field values
 //-------------------------------------------------------------------------
 
-int32_t IndianCalendar::handleGetExtendedYear() {
+int32_t IndianCalendar::handleGetExtendedYear(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     int32_t year;
 
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {

icu4c/source/i18n/indiancal.h

@@ -234,7 +234,7 @@ class U_I18N_API IndianCalendar : public Calendar {
   /**
    * @internal
    */
-  virtual int32_t handleGetExtendedYear() override;
+  virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
   /**
    * Override Calendar to compute several fields specific to the Indian

icu4c/source/i18n/islamcal.cpp

@@ -484,7 +484,10 @@ int64_t IslamicCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, U
 /**
 * @draft ICU 2.4
 */
-int32_t IslamicCalendar::handleGetExtendedYear() {
+int32_t IslamicCalendar::handleGetExtendedYear(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     int32_t year;
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
         year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1

icu4c/source/i18n/islamcal.h

@@ -280,7 +280,7 @@ class U_I18N_API IslamicCalendar : public Calendar {
   /**
    * @internal
    */
-  virtual int32_t handleGetExtendedYear() override;
+  virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
   /**
    * Override Calendar to compute several fields specific to the Islamic

icu4c/source/i18n/japancal.cpp

@@ -191,8 +191,11 @@ int32_t JapaneseCalendar::internalGetEra() const
     return internalGet(UCAL_ERA, gCurrentEra);
 }
 
-int32_t JapaneseCalendar::handleGetExtendedYear()
+int32_t JapaneseCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     // EXTENDED_YEAR in JapaneseCalendar is a Gregorian year
     // The default value of EXTENDED_YEAR is 1970 (Showa 45)
     int32_t year;
@@ -201,9 +204,10 @@ int32_t JapaneseCalendar::handleGetExtendedYear()
         newerField(UCAL_EXTENDED_YEAR, UCAL_ERA) == UCAL_EXTENDED_YEAR) {
         year = internalGet(UCAL_EXTENDED_YEAR, kGregorianEpoch);
     } else {
-        UErrorCode status = U_ZERO_ERROR;
         int32_t eraStartYear = gJapaneseEraRules->getStartYear(internalGet(UCAL_ERA, gCurrentEra), status);
-        U_ASSERT(U_SUCCESS(status));
+        if (U_FAILURE(status)) {
+            return 0;
+        }
 
         // extended year is a gregorian year, where 1 = 1AD,  0 = 1BC, -1 = 2BC, etc
         year = internalGet(UCAL_YEAR, 1)    // pin to minimum of year 1 (first year)

icu4c/source/i18n/japancal.h

@@ -123,7 +123,7 @@ class JapaneseCalendar : public GregorianCalendar {
      * Japanese calendar case, this is equal to the equivalent extended Gregorian year.
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
     /**
      * Return the maximum value that this field could have, given the current date.

icu4c/source/i18n/persncal.cpp

@@ -187,7 +187,10 @@ int64_t PersianCalendar::handleComputeMonthStart(int32_t eyear, int32_t month, U
 // Functions for converting from milliseconds to field values
 //-------------------------------------------------------------------------
 
-int32_t PersianCalendar::handleGetExtendedYear() {
+int32_t PersianCalendar::handleGetExtendedYear(UErrorCode& status) {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
     int32_t year;
     if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
         year = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1

icu4c/source/i18n/persncal.h

@@ -228,7 +228,7 @@ class PersianCalendar : public Calendar {
   /**
    * @internal
    */
-  virtual int32_t handleGetExtendedYear() override;
+  virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
   /**
    * Override Calendar to compute several fields specific to the Persian

icu4c/source/i18n/taiwncal.cpp

@@ -63,8 +63,12 @@ const char *TaiwanCalendar::getType() const
     return "roc";
 }
 
-int32_t TaiwanCalendar::handleGetExtendedYear()
+int32_t TaiwanCalendar::handleGetExtendedYear(UErrorCode& status)
 {
+    if (U_FAILURE(status)) {
+        return 0;
+    }
+
     // EXTENDED_YEAR in TaiwanCalendar is a Gregorian year
     // The default value of EXTENDED_YEAR is 1970 (Minguo 59)
     int32_t year = kGregorianEpoch;
@@ -78,6 +82,9 @@ int32_t TaiwanCalendar::handleGetExtendedYear()
             year =     internalGet(UCAL_YEAR, 1) + kTaiwanEraStart;
         } else if(era == BEFORE_MINGUO) {
             year = 1 - internalGet(UCAL_YEAR, 1) + kTaiwanEraStart;
+        } else {
+            status = U_ILLEGAL_ARGUMENT_ERROR;
+            return 0;
         }
     }
     return year;

icu4c/source/i18n/taiwncal.h

@@ -139,7 +139,7 @@ class TaiwanCalendar : public GregorianCalendar {
      * @return the extended year
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
     /**
      * Subclasses may override this method to compute several fields
      * specific to each calendar system.  

icu4c/source/i18n/unicode/calendar.h

@@ -1694,10 +1694,11 @@ class U_I18N_API Calendar : public UObject {
      * use the UCAL_EXTENDED_YEAR field or the UCAL_YEAR and supra-year fields (such
      * as UCAL_ERA) specific to the calendar system, depending on which set of
      * fields is newer.
+     * @param status        ICU Error Code
      * @return the extended year
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() = 0;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) = 0;
 
     /**
      * Subclasses may override this.  This method calls

icu4c/source/i18n/unicode/gregocal.h

@@ -583,10 +583,11 @@ class U_I18N_API GregorianCalendar: public Calendar {
      * use the UCAL_EXTENDED_YEAR field or the UCAL_YEAR and supra-year fields (such
      * as UCAL_ERA) specific to the calendar system, depending on which set of
      * fields is newer.
+     * @param status
      * @return the extended year
      * @internal
      */
-    virtual int32_t handleGetExtendedYear() override;
+    virtual int32_t handleGetExtendedYear(UErrorCode& status) override;
 
     /** 
      * Subclasses may override this to convert from week fields