# std::undeclare_no_pointers

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< cpp‎ | memory

Defined in header `<memory>` |  |
void undeclare_no_pointers( char *p, std::size_t n ); |  | (since C++11) (removed in C++23)

Unregisters a range earlier registered with std::declare_no_pointers().

### Parameters

p | - | pointer to the beginning of the range previously registered with std::declare_no_pointers
n | - | the number of bytes in the range, same value as previously used with std::declare_no_pointers

### Return value

(none)

### Exceptions

Throws nothing.

### See also

declare_no_pointers (C++11)(removed in C++23) | declares that a memory area does not contain traceable pointers (function)

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