forked from Imagelibrary/rtems
2c5199bb04
In POSIX, zero size memory allocations are implementation-defined behaviour. The implementation has two options: https://pubs.opengroup.org/onlinepubs/9699919799/functions/malloc.html https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_memalign.html Linux and FreeBSD return a unique pointer for zero size memory allocations. Return NULL on RTEMS to more likely catch the use of a zero size memory area by erroneous applications. Update #4390.
47 lines
759 B
C
47 lines
759 B
C
/**
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* @file
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*
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* @brief RTEMS Malloc Family Implementation
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* @ingroup libcsupport
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*/
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/*
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* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef RTEMS_NEWLIB
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#include <stdlib.h>
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#include <errno.h>
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#include "malloc_p.h"
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void *malloc(
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size_t size
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)
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{
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void *return_this;
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if ( size == 0 ) {
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return NULL;
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}
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return_this = rtems_heap_allocate_aligned_with_boundary( size, 0, 0 );
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if ( !return_this ) {
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errno = ENOMEM;
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return (void *) 0;
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}
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return return_this;
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}
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#endif
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