EnsureCapacity() on List<> increments the version

[mikernet]

Description

Apparent oversight: Setting Capacity or calling TrimExcess() on List<> does not increment the version but calling EnsureCapacity(int) does.

Reproduction Steps

var x = new List<int>();
var e = x.GetEnumerator();
x.EnsureCapacity(10);
e.MoveNext(); // collection modified exception due to version increment

Expected behavior

Calling EnsureCapacity should not increment the version.

Actual behavior

Calling EnsureCapacity increments the version.

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

[ghost]

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Issue Details

---

Description

Apparent oversight: Setting Capacity or calling TrimExcess() on List<> does not increment the version but calling EnsureCapacity(int) does.

Reproduction Steps

var x = new List<int>();
var e = x.GetEnumerator();
x.EnsureCapacity(10);
e.MoveNext(); // collection modified exception due to version increment

Expected behavior

Calling EnsureCapacity should not increment the version.

Actual behavior

Calling EnsureCapacity increments the version.

Regression?

No response

Known Workarounds

No response

Configuration

No response

Other information

No response

Author:	mikernet
Assignees:	-
Labels:	area-System.Collections, untriaged
Milestone:	-

[hez2010]

See #81523
We may remove the check completely in the future.

[mikernet]

Yeah, I mentioned this in that discussion as well but wanted to create an issue to track this specifically in case a decision is made to keep the version checks.