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freebsd-dev/lib/libc/stdlib
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Dimitry Andric 4e5d32a445 Fix null pointer subtraction in mergesort() 
Clang 13 produces the following warning for this function:

lib/libc/stdlib/merge.c:137:41: error: performing pointer subtraction with a null pointer has undefined behavior [-Werror,-Wnull-pointer-subtraction]
        if (!(size % ISIZE) && !(((char *)base - (char *)0) % ISIZE))
                                               ^ ~~~~~~~~~

This is meant to check whether the size and base parameters are aligned
to the size of an int, so use our __is_aligned() macro instead.

Also remove the comment that indicated this "stupid subtraction" was
done to pacify some ancient and unknown Cray compiler, and which has
been there since the BSD 4.4 Lite Lib Sources were imported.

MFC after:	3 days
2021-08-27 19:46:18 +02:00
..
jemalloc Follow-up r365371 by removing sentences which indicate the state of the 2020-09-06 09:08:06 +00:00
_Exit.c
a64l.3
a64l.c
abort.3 Bump the date on man pages in r334306 2018-05-29 02:41:32 +00:00
abort.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
abs.3
abs.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
alloca.3
at_quick_exit.3
atexit.3
atexit.c Fix order of destructors between main binary and libraries. 2019-04-15 13:03:09 +00:00
atexit.h General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
atof.3 Note some functions that appeared in First Edition Unix 2020-04-01 22:50:41 +00:00
atof.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
atoi.3 Note some functions that appeared in First Edition Unix 2020-04-01 22:50:41 +00:00
atoi.c libc: remove explicit cast NULL in atoi 2018-06-13 08:52:17 +00:00
atol.3
atol.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
atoll.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
bsearch_b.c
bsearch.3 bsearch.3: Improve the example. 2019-07-17 19:29:55 +00:00
bsearch.c libc: typo fix (s/involes/involves) 2020-10-16 17:51:09 +00:00
cxa_thread_atexit_impl.c Export __cxa_thread_atexit_impl as an alias for __cxa_thread_atexit. 2017-01-07 16:05:19 +00:00
cxa_thread_atexit.c Export __cxa_thread_atexit_impl as an alias for __cxa_thread_atexit. 2017-01-07 16:05:19 +00:00
div.3
div.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
exit.3 _Exit(3): document implementation 2021-08-08 22:39:46 +03:00
exit.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
getenv.3
getenv.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
getopt_long.3 Fix a typo: argments -> arguments 2020-05-19 11:05:27 +00:00
getopt_long.c getopt: Fix conversion from string-literal to non-const char * 2021-01-19 21:23:25 +00:00
getopt.3
getopt.c getopt: Fix conversion from string-literal to non-const char * 2021-01-19 21:23:25 +00:00
getsubopt.3
getsubopt.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
hcreate_r.c Replace implementation of hsearch() by one that scales. 2015-12-27 07:50:11 +00:00
hcreate.3 hcreate(3): fix the ERRORS section and bump .Dd 2017-02-07 02:32:49 +00:00
hcreate.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
hdestroy_r.c Replace implementation of hsearch() by one that scales. 2015-12-27 07:50:11 +00:00
heapsort_b.c
heapsort.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
hsearch_r.c Replace implementation of hsearch() by one that scales. 2015-12-27 07:50:11 +00:00
hsearch.h Replace implementation of hsearch() by one that scales. 2015-12-27 07:50:11 +00:00
imaxabs.3
imaxabs.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
imaxdiv.3
imaxdiv.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
insque.3
insque.c
l64a.c Let l64a() properly null terminate its result. 2016-05-26 20:55:15 +00:00
labs.3
labs.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
ldiv.3
ldiv.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
llabs.3
llabs.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
lldiv.3
lldiv.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
lsearch.3 Fix markup on "\n" in printf so it renders correctly. 2016-04-17 18:25:34 +00:00
lsearch.c
Makefile.inc libc qsort(3): Eliminate ambiguous sign comparison 2021-07-28 20:59:20 -07:00
memory.3
merge.c Fix null pointer subtraction in mergesort() 2021-08-27 19:46:18 +02:00
mergesort_b.c
ptsname.3 Implement ptsname_r. 2020-10-17 04:14:38 +00:00
ptsname.c Further refinements of ptsname_r(3) interface: 2020-10-20 01:29:45 +00:00
qsort_r.c
qsort_s.c Add qsort_s(3). Apart from the constraints, it also makes it easier 2020-01-20 11:40:07 +00:00
qsort.3 qsort.3: Bump Dd and note that Annex K is optional 2020-01-20 18:43:10 +00:00
qsort.c libc qsort(3): Eliminate ambiguous sign comparison 2021-07-28 20:59:20 -07:00
quick_exit.3 C++17 requires quick_exit(3) to be async-signal safe. 2017-11-04 10:52:58 +00:00
quick_exit.c libc: further adoption of SPDX licensing ID tags. 2017-11-25 17:12:48 +00:00
radixsort.3
radixsort.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
rand.3 rand(3): Replace implementation with one backed by random(3) algorithm 2020-02-01 20:33:23 +00:00
rand.c Fix race between first rand(3) calls with _once(). 2021-07-21 11:32:22 -04:00
random.3 rand(3): Replace implementation with one backed by random(3) algorithm 2020-02-01 20:33:23 +00:00
random.c rand(3): Replace implementation with one backed by random(3) algorithm 2020-02-01 20:33:23 +00:00
random.h rand(3): Replace implementation with one backed by random(3) algorithm 2020-02-01 20:33:23 +00:00
reallocarray.3
reallocarray.c
reallocf.3
reallocf.c Regularize my copyright notice 2019-12-04 16:56:11 +00:00
realpath.3
realpath.c vfs: add realpathat syscall 2020-02-20 16:58:19 +00:00
remque.c
set_constraint_handler_s.3 Provide set_constraint_handler_s(3) man page. 2018-08-19 14:39:57 +00:00
set_constraint_handler_s.c Improve standard compliance for memset_s() and abort_handler_s(). 2017-08-12 15:18:17 +00:00
strfmon.3
strfmon.c Compute the correct size of the string to move forward. 2020-09-02 20:04:26 +00:00
strtod.3
strtoimax.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtol.3
strtol.c Move strtold wrapper from strtol.c to its own strtold.c. This code 2018-01-31 03:05:14 +00:00
strtold.c Use standard 2-clause license where copyright is held by the FreeBSD Foundation 2018-02-02 16:47:32 +00:00
strtoll.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtonum.3
strtonum.c
strtoq.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtoul.3
strtoul.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtoull.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtoumax.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
strtouq.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
Symbol.map Further refinements of ptsname_r(3) interface: 2020-10-20 01:29:45 +00:00
system.3 libc: Fix most issues reported by mandoc 2020-12-19 14:54:28 +00:00
system.c General further adoption of SPDX licensing ID tags. 2017-11-20 19:49:47 +00:00
tdelete.c Improve typing of POSIX search tree functions. 2016-10-13 18:25:40 +00:00
tfind.c Improve typing of POSIX search tree functions. 2016-10-13 18:25:40 +00:00
tsearch_path.h
tsearch.3 Follow up to r320992, properly escape the backslash so it renders properly. 2017-07-14 17:27:15 +00:00
tsearch.c Improve typing of POSIX search tree functions. 2016-10-13 18:25:40 +00:00
twalk.c Improve typing of POSIX search tree functions. 2016-10-13 18:25:40 +00:00