[Mono-dev] Stackoverflow exception while processing a linq query

[Vladimir Dimitrov]

The problem is I cannot reproduce this any more. I ran the same code on 
a Windows machine and it changed the information stored in the database 
which was causing the problematic situation. But even if I don't see 
such a bug report causing big attention I will add it. Should I file it 
here: https://bugzilla.xamarin.com/ ?

On 5.3.2013 ?. 16:04 ?., Rodrigo Kumpera wrote:
> Could you please file a bug report?
>
>
> On Sat, Mar 2, 2013 at 2:37 PM, Vladimir Dimitrov 
> <vlad.dimitrov at gmail.com <mailto:vlad.dimitrov at gmail.com>> wrote:
>
>     Recently I received a strange error on one of our servers which
>     run mono 2.10.8.1 on Ubuntu 12.4:
>
>     System.AggregateException: One or more errors occured --->
>     System.StackOverflowException: The requested operation caused a
>     stack overflow.
>       at
>     System.Collections.Concurrent.SplitOrderedList`2[System.String,System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[Warehouse.Sync.Common.ChangeItem]]].GetParent
>     (UInt32 v) [0x00000] in <filename unknown>:0
>       at
>     System.Collections.Concurrent.SplitOrderedList`2[System.String,System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[Warehouse.Sync.Common.ChangeItem]]].InitializeBucket
>     (UInt32 b) [0x00000] in <filename unknown>:0
>       at
>     System.Collections.Concurrent.SplitOrderedList`2[System.String,System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[Warehouse.Sync.Common.ChangeItem]]].InitializeBucket
>     (UInt32 b) [0x00000] in <filename unknown>:0
>       at
>     System.Collections.Concurrent.SplitOrderedList`2[System.String,System.Collections.Generic.KeyValuePair`2[System.String,System.Collections.Generic.IEnumerable`1[Warehouse.Sync.Common.ChangeItem]]].InitializeBucket
>     (UInt32 b) [0x00000] in <filename unknown>:0
>
>     This continued in the logs for several megabytes. Looking at the
>     code
>     (https://github.com/mosa/Mono-Class-Libraries/blob/master/mcs/class/corlib/System.Collections.Concurrent/SplitOrderedList.cs)
>     it looks perfectly normal to happen.
>
>     Looks like if InitializeBucket receives 0 then GetParrent will
>     return 0. GetBucket can return null too if list it checks in is
>     empty and then the whole thing gets into infinite recursion... Any
>     idea on how this situation happens/can be avoided and if anybody
>     else encountered a similar problem?
>
>     Thanks,
>      Vladimir Dimitrov
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>

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