PROLOG<\/a> This manual page is part of the POSIX Programmer\u2019s Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.<\/p>\n free \u2014 free allocated memory<\/p>\n #include void free(void *ptr<\/i>);<\/p>\n The functionality described on this reference page is aligned with the ISO\u00a0C standard. Any conflict between the requirements described here and the ISO\u00a0C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO\u00a0C standard.<\/p>\n The free<\/i>() function shall cause the space pointed to by ptr<\/i> to be deallocated; that is, made available for further allocation. If ptr<\/i> is a null pointer, no action shall occur. Otherwise, if the argument does not match a pointer earlier returned by a function in POSIX.1-2008 that allocates memory as if by malloc<\/i>(), or if the space has been deallocated by a call to free<\/i>() or realloc<\/i>(), the behavior is undefined.<\/p>\n Any use of a pointer that refers to freed space results in undefined behavior.<\/p>\n The free<\/i>() function shall not return a value.<\/p>\n No errors are defined.<\/p>\n The following sections are informative.<\/i><\/p>\n None.<\/p>\n There is now no requirement for the implementation to support the inclusion of None.<\/p>\n None.<\/p>\n calloc<\/i>(), malloc<\/i>(), posix_memalign<\/i>(), realloc<\/i>()<\/p>\n
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COPYRIGHT<\/a> <\/p>\n
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