Bug 18097 - ConcurrentStack<T>.PushRange() does not set the collection size correctly
Summary: ConcurrentStack<T>.PushRange() does not set the collection size correctly
Alias: None
Product: Class Libraries
Classification: Mono
Component: mscorlib ()
Version: 3.2.x
Hardware: PC Linux
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2014-02-28 12:41 UTC by Craig Minihan
Modified: 2014-05-29 09:39 UTC (History)
2 users (show)

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

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Description Craig Minihan 2014-02-28 12:41:59 UTC
In: System.Collections.Concurrent.ConcurrentStack<T>.PushRange(T[] items, int startIndex, int count)

The collection size is not increased by this call. The last line:

Interlocked.Add (ref count, count);
Should be:
Interlocked.Add (ref this.count, count);

Count is a member and a parameter in this method. The Interlocked.Add() is adding to the parameter not the method instance.

To replicate:
var stack = new ConcurrentStack<int>();
var data = new int[10];
stack.PushRange(data); // calls PushRange(T[] items, int startIndex, int count)
Console.WriteLine("Stack size is: {0}, should be {1}", stack.Count, data.Length);
Comment 1 Craig Minihan 2014-02-28 12:54:59 UTC
Fix make in pull request #928 on GitHub.
Comment 2 Craig Minihan 2014-03-05 07:45:32 UTC
Correction: fix in pull #931
Comment 3 Craig Minihan 2014-03-25 20:12:17 UTC
Merged into master in commit: 66aa46557bcafb3e49ca1d4e6b1a3d8cb48322bc