https://bugzilla.novell.com/show_bug.cgi?id=372892
Summary: EqualityComparer<T>.Default causes NRE for null argument
Product: Mono: Class Libraries
Version: SVN
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: CORLIB
AssignedTo: mono-bugs@lists.ximian.com
ReportedBy: [EMAIL PROTECTED]
QAContact: mono-bugs@lists.ximian.com
Found By: ---
It's easy to fix this bug but I'm not sure which way to fix it is the best, so
I'm rather posting the bug here:
using System;
using System.Collections.Generic;
public class Test
{
public static void Main ()
{
Console.WriteLine (EqualityComparer<object>.Default.GetHashCode
(null));
Console.WriteLine (EqualityComparer<string>.Default.GetHashCode
(null));
}
}
Actual results:
$ mono ./test.exe
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object
at
System.Collections.Generic.EqualityComparer`1+DefaultComparer[System.Object].GetHashCode
(System.Object obj) [0x00000]
at Test.Main () [0x00000]
Expected results:
no NRE (.NET outputs 0 and 0 for each).
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