Bug 11364 - Roundtrip format specifier (O/o) uses calendar of culture inappropriately
Summary: Roundtrip format specifier (O/o) uses calendar of culture inappropriately
Alias: None
Product: Class Libraries
Classification: Mono
Component: mscorlib ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: Untriaged
Assignee: Marek Safar
Depends on:
Reported: 2013-03-22 17:48 UTC by Jon Skeet
Modified: 2013-03-26 14:22 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Jon Skeet 2013-03-22 17:48:13 UTC
Description of Problem:

The roundtrip pattern should be culture-neutral; it shouldn't use the culture's format strings *or* calendar system. On Mono, it does - so any cultures with a different calendar system (giving a different date) will given an incorrect result.

Steps to reproduce the problem:

Run this code:

        var culture = new CultureInfo("ps-AF");
        var date = new DateTime(1976, 6, 19);
        Console.WriteLine(date.ToString("O", culture));

Actual Results:   1396-06-22T00:00:00.0000000
Expected Results: 1976-06-19T00:00:00.0000000

How often does this happen? Always

Additional Information:

Mono version 3.0.6
Comment 1 Jon Skeet 2013-03-22 18:20:17 UTC
Ditto for the "s" (sortable) standard format by the way.
Comment 2 Marek Safar 2013-03-26 14:21:56 UTC
Fixed in master