GC.AllocateUninitializedArray<T>(Int32, Boolean) Method

Reference

Definition

Namespace:: System

Assembly:: System.Runtime.dll

Source:: GC.CoreCLR.cs

Source:: GC.CoreCLR.cs

Source:: GC.CoreCLR.cs

Important

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Allocates an array while skipping zero-initialization, if possible.

public static T[] AllocateUninitializedArray<T> (int length, bool pinned = false);

static member AllocateUninitializedArray : int * bool -> 'T[]

Public Shared Function AllocateUninitializedArray(Of T) (length As Integer, Optional pinned As Boolean = false) As T()

Type Parameters

T

Specifies the type of the array element.

Parameters

length: Int32

Specifies the length of the array.

pinned: Boolean

Specifies whether the allocated array must be pinned.

Returns

T[]

An array object with uninitialized memory.

Remarks

If pinned is set to true, T must not be a reference type or a type that contains object references.

Skipping zero-initialization is a security risk. The unitialized array can contain invalid valuetype instances or sensitive information created by other parts of the application. The code operating on unitialized arrays should be heavily scrutinized to ensure that the unitialized data is never read.

Skipping zero-initialization using this API only has a material performance benefit for large arrays, such as buffers of several kilobytes or more.

Applies to