CVS log for src/usr.bin/sort/Makefile

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Default branch: MAIN

Revert CC_WNO_USE_AFTER_FREE from Makefile's (thanks uwe@)

Sprinkle CC_WNO_USE_AFTER_FREE for GCC 12

All of them are blamed for idiom equivalent to:
	newbuf = realloc(buf, size);
	p = newbuf + (p - buf);

bsd.own.mk: rename GCC_NO_* to CC_WNO_*

Rename compiler-warning-disable variables from
	GCC_NO_warning
to
	CC_WNO_warning
where warning is the full warning name as used by the compiler.

GCC_NO_IMPLICIT_FALLTHRU is CC_WNO_IMPLICIT_FALLTHROUGH

Using the convention CC_compilerflag, where compilerflag
is based on the full compiler flag name.

Mostly merge changes from HEAD upto 20200411

introduce some common variables for use in GCC warning disables:

GCC_NO_FORMAT_TRUNCATION    -Wno-format-truncation (GCC 7/8)
GCC_NO_STRINGOP_TRUNCATION  -Wno-stringop-truncation (GCC 8)
GCC_NO_STRINGOP_OVERFLOW    -Wno-stringop-overflow (GCC 8)
GCC_NO_CAST_FUNCTION_TYPE   -Wno-cast-function-type (GCC 8)

use these to turn off warnings for most GCC-8 complaints.  many
of these are false positives, most of the real bugs are already
commited, or are yet to come.


we plan to introduce versions of (some?) of these that use the
"-Wno-error=" form, which still displays the warnings but does
not make it an error, and all of the above will be re-considered
as either being "fix me" (warning still displayed) or "warning
is wrong."

sync to netbsd-5

Pull up the following revisions(s) (requested by dsl in ticket #1084):
	usr.bin/sort/Makefile:	revision 1.6-1.8
	usr.bin/sort/append.c:	revision 1.15-1.22
	usr.bin/sort/fields.c:	revision 1.20-1.30
	usr.bin/sort/files.c:	revision 1.27-1.40
	usr.bin/sort/fsort.c:	revision 1.33-1.45
	usr.bin/sort/fsort.h:	revision 1.14-1.17
	usr.bin/sort/init.c:	revision 1.19-1.23
	usr.bin/sort/msort.c:	revision 1.19-1.28
	usr.bin/sort/radix_sort.c:	revision 1.1-1.4
	usr.bin/sort/sort.1:	revision 1.27-1.29
	usr.bin/sort/sort.c:	revision 1.47-1.56
	usr.bin/sort/sort.h:	revision 1.20-1.30
	usr.bin/sort/tmp.c:	revision 1.14-1.15

Only use radix sort for in-memory sort, always merge temporary files.
Use a local radixsort() function so we can pass record length.
Avoid use of weight tables for key compares.
Fix generation of keys for numbers, negate value for reverse sort.
Write file in reverse-key order for 'sort -n'.
'sort -S' now does a posix sort (sort matching keys by record data).
Ensure merge sort doesn't have too many temporary files open.
Fixes: PR#18614 PR#27257 PR#25551 PR#22182 PR#31095 PR#30504 PR#36816
PR#37860 PR#39308 PR#42094

Save length of key instead of relying of the weight of the record sep.
This frees a byte value to use for 'end of key' (to correctly sort
short keys) while still having a weight assigned to the field sep.
(Unless -t is given, the field sep is in the field data.)
Do reverse sorts by writing the output file in reverse order (rather
than reversing the sort - apart from merges).
All key compares are now unweighted.
For 'sort -u' mark duplicates keys during the sort and don't write
to the output.
Use -S to mean a posix sort - where equal keys are sorted using the
raw record (rather than being kept in the original order).
For 'sort -f' (no keys) generate a key of the folded data (as for -n
-i and -d), simplifies the code and allows a 'posix' sort.

Include a local copy of the sradixsort() code from libc.
Currently unchanged apart from the deletion of the 'unstable' version and
other unneeded code.
Use fldtab[0]. not fldtab-> when we are referring to the global info
in the 0th entry to emphasise that this entry is different.
fldtab[0].weights is only needed in the SINGL_FLD case - so set it there.
Re-indent a big 'if' is setfield() so that the line breaks match the
logic - which looks dubious now!

Sync with HEAD.

Third (and last) commit. See http://mail-index.netbsd.org/source-changes/2009/05/13/msg221222.html

Enable WARNS=4 by default for usr.bin, except for:
	awk  bdes  checknr  compile_et  error  gss  hxtool  kgetcred  kinit
	klist  ldd  less  lex  locale  login  m4  man  menuc  mk_cmds
	mklocale  msgc  openssl  rpcgen  rpcinfo  sdiff  spell  ssh
	string2key  telnet  tn3270  verify_krb5_conf  xlint

this builds with WARNS=2

put tmp.c back to Makefile, too

make ftmp() wrapper aroung tmpfile(), there is no need to reimplement it
move ftmp() from tmp.c to files.c
g/c no longer needed stuff

Hit sort(1) with a hammer till it compiles.
Also add RCSIDs.

4.4BSD-Lite2 contrib/sort

Initial revision