From d692c62dfbf834c16ef7f171ea3161b3f3fac06b Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Mon, 3 May 2021 09:17:33 +0200 Subject: Make zero size allocation result consistent The zero size allocations had no consistent behaviour in RTEMS. For example, malloc( 0 ) returned NULL and posix_memalign( &p, align, 0 ) returned in p a unique pointer (or NULL if no memory is available). 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. Use this approach for RTEMS as well throughout the memory allocation directives Close #4390. --- cpukit/libcsupport/src/malloc.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'cpukit/libcsupport/src/malloc.c') diff --git a/cpukit/libcsupport/src/malloc.c b/cpukit/libcsupport/src/malloc.c index e61128bf8c..795254fbab 100644 --- a/cpukit/libcsupport/src/malloc.c +++ b/cpukit/libcsupport/src/malloc.c @@ -30,12 +30,6 @@ void *malloc( { void *return_this; - /* - * Validate the parameters - */ - if ( !size ) - return (void *) 0; - return_this = rtems_heap_allocate_aligned_with_boundary( size, 0, 0 ); if ( !return_this ) { errno = ENOMEM; -- cgit v1.2.3