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| author | Bruno Haible <bruno@clisp.org> | 2020-07-21 01:33:55 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2020-07-21 12:45:20 +0200 |
| commit | 62e2943e17e1ff3f572b955909f45a61681c1379 (patch) | |
| tree | 807287f695d2d106476b17254b9dc9f464a328f1 /man3 | |
| parent | 8c464d172c1d13365c60a18b8c295036ab29efa4 (diff) | |
| download | man-pages-62e2943e17e1ff3f572b955909f45a61681c1379.tar.gz | |
posix_memalign.3: Clarify how to free the result of posix_memalign
The man page did not tell how a memory block obtained through
posix_memalign() can be freed. POSIX:2018 says it.
https://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_memalign.html
I verified using a test program that this is true for glibc.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man3')
| -rw-r--r-- | man3/posix_memalign.3 | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/man3/posix_memalign.3 b/man3/posix_memalign.3 index 22b4498202..2a8e5e61eb 100644 --- a/man3/posix_memalign.3 +++ b/man3/posix_memalign.3 @@ -91,15 +91,16 @@ The address of the allocated memory will be a multiple of .IR "alignment" , which must be a power of two and a multiple of .IR "sizeof(void\ *)" . +This address can later be successfully passed to +.BR free (3). If .I size is 0, then the value placed in .IR "*memptr" -is either NULL, +is either NULL .\" glibc does this: -or a unique pointer value that can later be successfully passed to -.BR free (3). +or a unique pointer value. .PP The obsolete function .BR memalign () |