--- /dev/null
+--TEST--
+Bug #54254 (cal_days_in_month incompatible with jdtojewish in non-leap-years)
+--SKIPIF--
+<?php include 'skipif.inc'; ?>
+--FILE--
+<?php
+var_dump(cal_days_in_month(CAL_JEWISH, 1, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 2, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 3, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 4, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 5, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 6, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 7, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 8, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 9, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 10, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 11, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 12, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 13, 5771));
+var_dump(cal_days_in_month(CAL_JEWISH, 1, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 2, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 3, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 4, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 5, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 6, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 7, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 8, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 9, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 10, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 11, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 12, 5772));
+var_dump(cal_days_in_month(CAL_JEWISH, 13, 5772));
+--EXPECT--
+int(30)
+int(30)
+int(30)
+int(29)
+int(30)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(0)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)
+int(30)
+int(29)