* src/factor.c (factor_using_pollard_rho): Change type of "i"
to unsigned to avoid warning from gcc's -Wstrict-overflow.
* src/expr.c: Use an unsigned intermediate.
* src/dircolors.c (main): Reorder operations to avoid the risk of
pointer overflow.
* src/tr.c (squeeze_filter): Change NOT_A_CHAR from an anonymous
"enum" to an "int", to avoid this warning:
tr.c:1624:10: error: assuming signed overflow does not occur when
simplifying conditional to constant [-Werror=strict-overflow]
* src/pr.c (main): Make index "i" unsigned.
* NEWS: "an misleading"
* src/expr.c: "a integer
* src/ptx.c (find_occurs_in_text): "a end"
* src/shred.c (do_wipefd): "a infinite"
* src/sort.c (SUBTHREAD_LINES_HEURISTIC): "an dual-core"
(compare_random): "an checksum"
* cfg.mk (old_NEWS_hash): Update, since the typo was in old news.
* src/expr.c (eval4, eval3): Clarify that expr expects integers,
and not the broader category of numbers.
* tests/misc/expr: Update test accordingly.
Suggested by Dan Jacobson.
This is because bitwise operators are:
- confusing and inconsistent in a boolean context
- non short circuiting
- brittle in C89 where bool can be an int (so > 1)
* src/system.h: Rename emit_bug_reporting_address() to
emit_ancillary_info() and update it to not print the translation
project address in en_* locales, and _do_ print it in the 'C'
(and other) locales so that it's included in the default man page.
Also mention how to invoke the texinfo documentation for each command.
Also move the "hard-locale.h" include to the 8 files that now use it.
* man/help2man: Strip the newly added texinfo reference from the
--help output as a more verbose version is already added by help2man.
Suggestion from C de-Avillez
* src/expr.c: Standardise the format of AUTHORS to
that used in other utils with multiple authors.
Also add Paul Eggert since he basically rewrote it
with his bignum fixes.
* AUTHORS (expr): Add Paul Eggert.
* doc/coreutils.texi (expr invocation): Remove the --bignum and
--no-bignum options. They weren't really needed, and they broke
longstanding (albeit nonportable) scripts.
* src/expr.c: Don't include <assert.h>. Include "inttostr.h",
"long-options.h", "verify.h". Check at compile-time that
size_t fits in unsigned long int, as the code assumes this in
several places.
(HAVE_GMP): Define to 0 if not defined, for convenience.
(mpz_t, mpz_clear, mpz_init_set_ui, mpz_init_set_str, mpz_add):
(mpz_sub, mpz_mul, mpz_tdiv_q, mpz_tdiv_r, mpz_get_str, mpz_sgn):
(mpz_fits_ulong_p, mpz_get_ui, mpz_out_str):
Supply substitutes when !HAVE_GMP, which work well enough for
expr's purposes.
(mp_integer): Remove. All integers are gmp, if gmp is available.
(struct valinfo): Remove 'z' member; no longer needed. The 'i'
member is always of type mpz_t.
(enum arithmetic_mode, MP_NEVER, MP_ALWAYS, MP_AUTO, mode):
Remove; no longer needed.
(usage): Remove documentation of --bignum and --no-bignum.
(integer_overflow): Abort if error misbehaves, to pacify GCC.
Restore old message on arithmetic overflow, to be conservative.
(die): Omit exit_status parameter; not needed (is always EXPR_FAILURE).
(string_too_long, USE_BIGNUM, NO_USE_BIGNUM, long_options):
Remove; no longer needed.
(main): Don't use getopt_long; this breaks old nonportable scripts.
(int_value): Arg is unsigned, in case we have strings whose length
exceeds LONG_MAX (!).
(int_value, freev, printv, null, tostring, toarith):
(eval6, eval4, eval3):
Always use mpz_ functions, to simplify the code.
(substr_value): Remove; no longer needed.
(getsize): Simplify the API: one arg rather than 3. Don't assume
unsigned long int fits in size_t.
(promote, domult, dodivide, doadd): Remove; no longer needed.
* tests/misc/expr: Don't use --bignum to test for bignum support.
Instead, use big numbers to test this.
* src/expr.c (main): Given a first argument like -22 (negative, with
two or more digits), expr would decrement optind to 0 and then attempt
to evaluate argv[0].
* src/expr.c (die): New "noreturn" function to wrap one-arg use of
error
(string_too_long): Use die rather than error.
(toint): Remove definition of now-unused function.
(eval6): Remove a little duplication.
Use die rather than error.
(dodivide): Remove declaration of now-unused variable.
* src/Makefile.am (expr_LDADD): Link expr against GNU MP.
* doc/coreutils.texi (expr invocation): Describe --bignum,
--no-bignum. Explain the new arbitrary-precision functionality.
* NEWS: Indicate that arbitrary-precision arithmetic is now
supported in expr.
* src/expr.c (enum valtype): Added mp_integer, signifying a GNU MP
number.
(usage): Document the new options --bignum and --no-bignum which
force and prohibit the use of arbitrary-precision arithmetic,
respectively.
(long_options): data structure for getopt_long, which we need to
use to parse the options mentioned above.
(main): parse these options with getopt_long instead of
parse_long_options.
(valinfo): Downgrade the numeric member of the union from
intmax_t to signed long, since MP lacks functions for promoting an
intmax_t to an arbitrary-precision quantity.
(enum arithmetic_mode): Represents the current choice between
--bignum, --no-bignum and the default (automatically switch from
one to the other if needed).
(integer_overflow): issue a more explicit error message indicating
that MP is not available.
(string_too_long): new function, emits a fatal error message for
the case where an argument to the 'index' expression is too long
for a string offset to be represented.
(int_value): With --bignum, create the value as mp_integer rather
than plain integer.
(substr_value): factored out of eval6; implements "substr".
(freev): also destroy mp_integer values. Check that no mp_integer
values exist if --no-bignum was specified.
(printv, null, tostring): support mp_integer.
(toint): new funtion for converting from string or mp_integer to
integer.
(getsize): extracts a size_t value from a VALUE object; used to
implement substr.
(promote): promotes a value from integer to mp_integer.
(domult, dodivide): functions for multiplication and division,
factored out of eval4.
(doadd): addition/subraction function, factpred out of eval3.
(eval3): support mp_integer types; call doadd.
(eval4): support mp_integer types; call domult, dodivide.
(eval6): support mp_integer offsets and lengths for "substr" and
"index".
* TODO: Mention that expr supports arbitrary-precision arithmetic,
and suggest that this might also be a good idea for seq.
* AUTHORS (expr): Add James Youngman.
* src/expr.c (docolon): Free the regexp buffer using regfree, rather
than doing it manually, being careful to set fastmap to NULL first.
Free any re_regs.start and .end members, if necessary.
what POSIX requires. Also, don't let anchors match
newline; this fixes an incompatibility with tradition and with POSIX.
Don't warn about leading ^. POSIX says it is unspecified whether
^ is a special character, which means that implementations can
either treat it as special or not, but either way a warning is not
allowed (unless the regexp is otherwise invalid). Instead, anchor
the expression but treat ^ as an anchor; this is the traditional
behavior (e.g., Solaris 10).
(eval4, eval3, eval2): Treat non-numeric args, division by zero,
and the like as invalid expressions (exit status 2), not as
failure of 'expr' (exit status 3). This is more consistent with
how Solaris behaves.
(looks_like_integer): New function.
(toarith): Use it. Also, use xstrtoimax rather than rolling our
own diagnostics.
(eval2): Don't look for trouble if !evaluate; this simplifies things.
Compare numbers using string comparison, so that overflow is
not possible.
rather than suffering silently.
Before, expr would silently overflow and wrap around:
$ expr 9223372036854775808 = 0 # $(echo 2^63|bc)
1
Now it detects the problem and exits nonzero:
$ ./expr $(echo 2^63|bc) = 0
./expr: 9223372036854775808: integer is too large
