[Mono-bugs] [Bug 421098] New: --debug-cast causes NRE in SimpleCollator..ctor

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=421098


           Summary: --debug-cast causes NRE in SimpleCollator..ctor
           Product: Mono: Runtime
           Version: SVN
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: misc
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: andyhume32 at yahoo.co.uk
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Created an attachment (id=236036)
 --> (https://bugzilla.novell.com/attachment.cgi?id=236036)
Exception from a WinForms app, showing the same root exception as in the simple
case.

Running an app that accesses culture info fails with a NullReferenceException
when run with --debug=casts.  See the exception below, also an example stack
trace from a WinForms app is attached.

Seen on Linux SVN HEAD.

Logging it as runtime...

Exception from the simple app below:
[[
Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object
  at Mono.Globalization.Unicode.SimpleCollator..ctor
(System.Globalization.CultureInfo culture) [0x00006] in
/usr/local/src/mono/mcs/class/corlib/Mono.Globalization.Unicode/SimpleCollator.cs:171 
  at System.Globalization.CompareInfo..ctor (System.Globalization.CultureInfo
ci) [0x00067] in
/usr/local/src/mono/mcs/class/corlib/System.Globalization/CompareInfo.cs:96 
  at System.Globalization.CultureInfo.get_CompareInfo () [0x00033] in
/usr/local/src/mono/mcs/class/corlib/System.Globalization/CultureInfo.cs:468 
  at AccessSimpleCollator.Main () [0x00000] 
]]

App:
[[
class AccessSimpleCollator
{
        static void Main ()
        {
                // Access IPAddress..cctor -> ... ->
Mono.Globalization.Unicode.SimpleCollator..cctor -> ...
                //int x = System.Net.IPAddress.HostToNetworkOrder (0x55AA);
                //System.Console.WriteLine (x);
                //----
                // Or more directly...
                object y =
System.Globalization.CultureInfo.CurrentCulture.CompareInfo;
        }
}
]]

> gmcs AccessSimpleCollator.cs
> mono --debug=casts AccessSimpleCollator.exe
..crash...


The app also failed with --trace as is described in bug 421022.  Or did before
I updated today.  With both options together it fails with SIGSEGV.


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