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What is alloca() and why is its use discouraged?

April 26, 2017discouraged

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What is alloca() and why is its use discouraged?

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alloca() allocates memory which is automatically freed when the function which called alloca() returns. alloca() cannot be written portably, is difficult to implement on machines without a stack, and fails under certain conditions if implemented simply. Section 8.

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Posted

alloca() allocates memory which is automatically freed when the function which called alloca() returns. alloca() cannot be written portably, is difficult to implement on machines without a stack, and fails under certain conditions if implemented simply.