diff options
Diffstat (limited to 'src/corelib/tools/qdatetime.cpp')
| -rw-r--r-- | src/corelib/tools/qdatetime.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp index 54a4205..3e34d62 100644 --- a/src/corelib/tools/qdatetime.cpp +++ b/src/corelib/tools/qdatetime.cpp @@ -1336,7 +1336,10 @@ bool QDate::isValid(int year, int month, int day) bool QDate::isLeapYear(int y) { if (y < 1582) { - return qAbs(y) % 4 == 0; + if ( y < 1) { // No year 0 in Julian calendar, so -1, -5, -9 etc are leap years + ++y; + } + return y % 4 == 0; } else { return (y % 4 == 0 && y % 100 != 0) || y % 400 == 0; } |