(LONG_MAX_32_BITS): Remove.
Include <inttypes.h> and <stdint.h> if available.
(alignof, UNALIGNEDP): New macro, portable to all C89 hosts.
(__memrchr): Don't assume unsigned long int is either 4 or 8 bytes;
let it be any number of bytes greater than or equal to 4.
(LONG_MAX_32_BITS): Remove.
Include <inttypes.h> and <stdint.h> if available.
(alignof, UNALIGNEDP): New macro, portable to all C89 hosts.
(__memchr): Don't assume unsigned long int is either 4 or 8 bytes;
let it be any number of bytes greater than or equal to 4.
* memrchr.c: Likewise, with __memrchr.
suffices with C89 or better.
(alignof): New macro, portable to all C89 hosts.
(UNALIGNED): Use it. Use uintptr_t if available, and assume
everything is unaligned otherwise; this is more portable than
assuming 'unsigned long int' will always work.
(localedir.h): Don't depend on Makefile: this causes Solaris
8 'make' to build localedir.h unnecessarily. The dependence
on Makefile is ineffective anyway, since $(localedir) might
change even if Makefile hasn't.
declared: this fixes a portability bug with Solaris 8 + GCC.
(STRTOX): Parenthesize use of macro arg as expression.
(vstrtoimax, vstrtoumax, vstrtold): Remove now-unnecessary
parentheses.
unistd.h, as autoconf does this for us. Check for libgen.h.
Also look for eaccess within -lgen, which is where it is in
Solaris. Set LIB_EACCESS accordingly.
you need to include first. You don't need to include any files
other than the usual config.h.
Include <inttypes.h> and <stdint.h> if available, for uintmax_t.
Remove 'struct stat;' not needed since we know sys/stat.h has
been included by dev-ino.h.
(struct cycle_check_state): Change chdir_counter to uintmax_t,
not size_t, since it isn't limited by object sizes.
Change magic from long unsigned int to int; that's good enough
for our use.
is_power_of_two, to reflect better what it really does.
All uses changed. Arg is now uintmax_t, not unsigned int
(it should have been unsigned long int -- that was a bug).
(cycle_check): Check for integer overflow in cycle count,
and report a cycle if that happens, as it must be a cycle
by this point.
numeric backup extensions.
Include "backupfile.h" first.
Include errno.h, stdbool.h, limits.h, unistd.h, xalloc.h.
(CLOSEDIR, INT_STRLEN_BOUND): Remove.
(pathconf) [! (HAVE_PATHCONF && defined _PC_NAME_MAX)]: New macro.
(_POSIX_NAME_MAX) [!defined _POSIX_NAME_MAX]: New macro.
(NAME_MAX_MAXIMUM): New macro. Unlike the old addext.c, we
also look at _XOPEN_NAME_MAX, for better performance on modern
hosts that support only file names of length 255 or more.
(ISDIGIT): unsigned -> unsigned int
(max_backup_version, version_number): Remove.
(check_extension): New function. Similar to the old addext, but
static, assumes that the extension has already been added,
and a bit more careful on DOS hosts.
(numbered_backup): New function. It does what max_backup_version
and version_number used to do, but it doesn't use integer arithmetic
to calculate extensions so it doesn't overflow.
(find_backup_file_name): Rewrite to use these new functions.
This has a new optimization: we needn't call pathconf if the
new numbered backup name has the same length as the old.
Also, use xmalloc rather than malloc, so that the caller
needn't worry about memory exhaustion.
All uses changed.
(NZERO): New macro, if system doesn't define it already.
(usage): Distinguish priorities from nice values.
Don't assume NZERO is 20.
(main): Use bool instead of int where appropriate.
If user specifies an adjustment out of range, always truncate it
to an inrange value instead of sometimes giving an error message
and sometimes not.
Do not assume that -1 is an error return from "nice" or
"getpriority", as it might be the current nice value minus NZERO.
If nice/setpriority fails with errno == EPERM, go ahead and run
the command anyway; POSIX requires this.
how it affects the scheduling priority. (The old documentation
implied that the nice value equaled the scheduling priority, which
isn't accurate.) Document that the range of nice values might
exceed -20..19. Specify what happens when you give a nice value
that is out of range, or when you don't have permissions to lower
the nice value. Bash doesn't have a builtin 'nice', so don't say
"most shells" have one.
