Bug 1783731 - Don't parse single digit mon or mday as an ISO date r=arai

Differential Revision: https://phabricator.services.mozilla.com/D192671

Author: vinnydiehl

js/src/jsdate.cpp

@@ -929,8 +929,8 @@ static int DaysInMonth(int year, int month) {
  * where:
  *
  *   YYYY = four-digit year or six digit year as +YYYYYY or -YYYYYY
- *   MM   = one or two-digit month (01=January, etc.)
- *   DD   = one or two-digit day of month (01 through 31)
+ *   MM   = two-digit month (01=January, etc.)
+ *   DD   = two-digit day of month (01 through 31)
  *   hh   = one or two digits of hour (00 through 23) (am/pm NOT allowed)
  *   mm   = one or two digits of minute (00 through 59)
  *   ss   = one or two digits of second (00 through 59)
@@ -1014,9 +1014,9 @@ static bool ParseISOStyleDate(DateTimeInfo::ForceUTC forceUTC, const CharT* s,
     NEED_NDIGITS(4, year);
   }
   DONE_DATE_UNLESS('-');
-  NEED_NDIGITS_OR_LESS(2, month);
+  NEED_NDIGITS(2, month);
   DONE_DATE_UNLESS('-');
-  NEED_NDIGITS_OR_LESS(2, day);
+  NEED_NDIGITS(2, day);
 
 done_date:
   if (PEEK('T')) {

js/src/tests/non262/Date/non-iso.js

@@ -40,12 +40,6 @@ assertEq(new Date("1997-03-08 1:1:1").getTime(),
          new Date("1997-03-08T01:01:01").getTime());
 assertEq(new Date("1997-03-08 11").getTime(),
          new Date("1997-03-08T11").getTime()); // Date(NaN)
-assertEq(new Date("1997-03-08").getTime(),
-         new Date("1997-03-08").getTime());
-assertEq(new Date("1997-03-8").getTime(),
-         new Date("1997-03-08").getTime());
-assertEq(new Date("1997-3-8").getTime(),
-         new Date("1997-03-08").getTime());
 assertEq(new Date("1997-03-08 11:19:10-07").getTime(),
          new Date("1997-03-08 11:19:10-0700").getTime());
 assertEq(new Date("1997-03-08T11:19:10-07").getTime(),

js/src/tests/non262/Date/parse-dashed-numeric-date.js

@@ -21,6 +21,11 @@ inTimeZone("MST", () => {
     "19999-09-12 (comment) 23:00:00": new Date(19999, Month.September, 12, 23),
     "19999-09-12 22:00:00 GMT-0800": new Date(19999, Month.September, 12, 23),
 
+    // Single digit mon or mday
+    "2021-09-1": new Date(2021, Month.September, 1),
+    "2021-9-01": new Date(2021, Month.September, 1),
+    "2021-9-1": new Date(2021, Month.September, 1),
+
     // 1-12 for first number should be month
     "1-09-12": new Date(2012, Month.January, 9),
     "1-09-2012": new Date(2012, Month.January, 9),