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Difference between revisions of "cpp/memory/c/malloc"

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void* malloc( std::size_t size );
 
void* malloc( std::size_t size );

Revision as of 13:29, 15 June 2012

 
 
Utilities library
General utilities
Relational operators (deprecated in C++20)
 
Dynamic memory management
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Allocators
Garbage collection support
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
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Defined in header <cstdlib>
void* malloc( std::size_t size );

Allocates size bytes of uninitialized storage.

If allocation succeeds, returns a pointer to the lowest (first) byte in the allocated memory block that is suitably aligned for any object type.

If size is zero, the behavior is implementation defined (null pointer may be returned, or some non-null pointer may be returned that may not be used to access storage)

Contents

Parameters

size - number of bytes to allocate

Return value

Pointer to the beginning of newly allocated memory or null pointer if error has occurred. The pointer must be deallocated with free().

Notes

This function does not call constructors or initialize memory in any way. Thus preferred method of memory allocation is new expression.

Example

See also

Template:cpp/memory/new/dcl list operator newTemplate:cpp/memory/dcl list get temporary buffer
C documentation for malloc