CA2014: Do not use stackalloc in loops

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	Value
Rule ID	CA2014
Category	Reliability
Fix is breaking or non-breaking	Non-breaking

Cause

Using the C# stackalloc expression inside of a loop.

Rule description

The C# stackalloc expression allocates memory from the current stack frame, and that memory may not be released until the current method call returns. If stackalloc is used in a loop, it can lead to stack overflows due to exhausting the stack memory.

How to fix violations

Move the stackalloc expression outside of all loops in the method.

When to suppress warnings

It may be safe to suppress the warning when the containing loop or loops are invoked only a finite number of times, such that the overall amount of memory allocated across all stackalloc operations is known to be relatively small.

See also

• Reliability rules