| Commit message (Expand) | Author | Files | Lines |
|---|
| 2013-11-20 | fix fd leak (missing close-on-exec) in getifaddrs | Rich Felker | 1 | -1/+1 |
| 2013-11-21 | math: add (obsolete) bsd drem and finite functions | Szabolcs Nagy | 5 | -0/+26 |
| 2013-11-21 | math: lgamma cleanup (simpler sin(pi*x) for the negative case)•••* simplify sin_pi(x) (don't care about inexact here, the result is
inexact anyway, and x is not so small to underflow)
* in lgammal add the previously removed special case for x==1 and
x==2 (to fix the sign of zero in downward rounding mode)
* only define lgammal on supported long double platforms
* change tgamma so the generated code is a bit smaller
| Szabolcs Nagy | 4 | -202/+110 |
| 2013-11-20 | fix the nominal type of LDBL_* limits on archs with ld64•••previously these macros wrongly had type double rather than long
double. I see no way an application could detect the error in C99, but
C11's _Generic can trivially detect it.
at the same time, even though these archs do not have excess
precision, the number of decimal places used to represent these
constants has been increased to 21 to be consistent with the decimal
representations used for the DBL_* macros.
| Rich Felker | 4 | -16/+16 |
| 2013-11-20 | write floating point limit constants to 21 significant decimal places•••this is enough to produce the correct value even if the constant is
interpreted as 80-bit extended precision, which matters on archs with
excess precision (FLT_EVAL_METHOD==2) under at least some
interpretations of the C standard. the shorter representations, while
correct if converted to the nominal precision at translation time,
could produce an incorrect value at extended precision, yielding
results such as (double)DBL_MAX != DBL_MAX.
| Rich Felker | 2 | -10/+10 |
| 2013-11-11 | iswspace: fix handling of 0 | rofl0r | 1 | -2/+1 |
| 2013-11-09 | fix harmless inconsistency in semtimedop•••this should not matter since the reality is that either all the sysv
sem syscalls are individual syscalls, or all of them are multiplexed
on the SYS_ipc syscall (depending on arch). but best to be consistent
anyway.
| Rich Felker | 1 | -1/+1 |
| 2013-11-09 | implement semtimedop•••this is a Linux-specific extension to the sysv semaphore api.
| Rich Felker | 2 | -0/+14 |
| 2013-11-09 | adjust sys/wait.h not to produde errors in strict ISO C feature profile•••siginfo_t is not available from signal.h when the strict ISO C feature
profile (e.g. passing -std=c99 to gcc without defining any other
feature test macros) is used, but the type is needed to declare
waitid. using sys/wait.h (or any POSIX headers) in strict ISO C mode
is an application bug, but in the interest of compatibility, it's best
to avoid producing gratuitous errors. the simplest fix I could find is
suppressing the declaration of waitid (and also signal.h inclusion,
since it's not needed for anything else) in this case, while still
exposing everything else in sys/wait.h
| Rich Felker | 1 | -3/+7 |
| 2013-11-08 | remove O_NOFOLLOW from __map_file used for time zone file loading•••it's not clear why I originally wrote O_NOFOLLOW into this; I suspect
the reason was with an aim of making the function more general for
mapping partially or fully untrusted files provided by the user.
however, the timezone code already precludes use of absolute or
relative pathnames in suid/sgid programs, and disallows .. in
pathnames which are relative to one of the system timezone locations,
so there is no threat of opening a symlink which is not trusted by
appropriate user. since some users may wish to put symbolic links in
the zoneinfo directories to alias timezones, it seems preferable to
allow this.
| Rich Felker | 1 | -1/+1 |
| 2013-11-08 | fix handling of overly-long TZ environment variable values•••the rest of the code is not prepared to handle an empty TZ string, so
falling back to __gmt ("GMT"), just as if TZ had been blank or unset,
is the preferable action.
| Rich Felker | 1 | -1/+1 |
| 2013-11-04 | timezone parser: fix iteration over search dir paths•••try+l points to \0, so only one iteration was ever tried.
| rofl0r | 1 | -1/+1 |
| 2013-11-04 | timezone parser: fix offset to transition table in 64bit code path•••we need to skip to the second TZif header, which starts at
skip+44, and then skip another header (20 bytes) plus the following
6 32bit values.
| rofl0r | 1 | -1/+1 |
| 2013-11-04 | fix timezone parser code crashing on 64bit sys•••if sizeof(time_t) == 8, this code path was missing the correct
offset into the zoneinfo file, using the header magic to do
offset calculations.
the 6 32bit fields to be read start at offset 20.
| rofl0r | 1 | -1/+1 |
| 2013-11-02 | fix regression in inet_aton due to misinterpretation of __ipparse return•••inet_aton returns a boolean success value, whereas __ipparse returns 0
on success and -1 on failure. also change the conditional in inet_addr
to be consistent with other uses of __ipparse where only negative
values are treated as failure.
| Rich Felker | 2 | -3/+3 |
| 2013-11-01 | simplify faccessat AT_EACCESS path and eliminate resource dependence•••now that we're waiting for the exit status of the child process, the
result can be conveyed in the exit status rather than via a pipe.
since the error value might not fit in 7 bits, a table is used to
translate possible meaningful error values to small integers.
| Rich Felker | 1 | -14/+21 |
| 2013-11-01 | fix faccessat AT_EACCESS path not to leave zombie processes•••I mistakenly assumed that clone without a signal produced processes
that would not become zombies; however, waitpid with __WCLONE is
required to release their pids.
| Rich Felker | 1 | -2/+6 |
| 2013-10-30 | fix inttypes.h PRI and SCN macros for [u]intptr_t types•••while using "l" unconditionally gave the right behavior due to
matching sizes/representations, it was technically UB and produced
compiler warnings with format string checking.
| Rich Felker | 1 | -11/+13 |
| 2013-10-29 | POSIX conformance fix: define struct entry in search.h | Szabolcs Nagy | 2 | -9/+9 |
| 2013-10-28 | fenv: fix i386 fesetround for sse•••i386 fenv code checks __hwcap for sse support, but in fesetround the sse
code was unconditionally jumped over after the test so the sse rounding
mode was never set.
| Szabolcs Nagy | 1 | -1/+1 |
| 2013-10-28 | math: extensive log*.c cleanup•••The log, log2 and log10 functions share a lot of code and to a lesser
extent log1p too. A small part of the code was kept separately in
__log1p.h, but since it did not capture much of the common code and
it was inlined anyway, it did not solve the issue properly. Now the
log functions have significant code duplication, which may be resolved
later, until then they need to be modified together.
logl, log10l, log2l, log1pl:
* Fix the sign when the return value should be -inf.
* Remove the volatile hack from log10l (seems unnecessary)
log1p, log1pf:
* Change the handling of small inputs: only |x|<2^-53 is special
(then it is enough to return x with the usual subnormal handling)
this fixes the sign of log1p(0) in downward rounding.
* Do not handle the k==0 case specially (other than skipping the
elaborate argument reduction)
* Do not handle 1+x close to power-of-two specially (this code was
used rarely, did not give much speed up and the precision wasn't
better than the general)
* Fix the correction term formula (c=1-(u-x) was used incorrectly
when x<1 but (double)(x+1)==2, this was not a critical issue)
* Use the exact same method for calculating log(1+f) as in log
(except in log1p the c correction term is added to the result).
log, logf, log10, log10f, log2, log2f:
* Use double_t and float_t consistently.
* Now the first part of log10 and log2 is identical to log (until the
return statement, hopefully this makes maintainence easier).
* Most special case formulas were removed (close to power-of-two and
k==0 cases), they increase the code size without providing precision
or performance benefits (and obfuscate the code).
Only x==1 is handled specially so in downward rounding mode the
sign of zero is correct (the general formula happens to give -0).
* For x==0 instead of -1/0.0 or -two54/0.0, return -1/(x*x) to force
raising the exception at runtime.
* Arg reduction code is changed (slightly simplified)
* The thresholds for arg reduction to [sqrt(2)/2,sqrt(2)] are now
consistently the [0x3fe6a09e00000000,0x3ff6a09dffffffff] and the
[0x3f3504f3,0x3fb504f2] intervals for double and float reductions
respectively (the exact threshold values are not critical)
* Remove the obsolete comment for the FLT_EVAL_METHOD!=0 case in log2f
(The same code is used for all eval methods now, on i386 slightly
simpler code could be used, but we have asm there anyway)
all:
* Fix signed int arithmetics (using unsigned for bitmanipulation)
* Fix various comments
| Szabolcs Nagy | 14 | -583/+369 |
| 2013-10-25 | add legacy ftime function and sys/timeb.h•••despite being marked legacy, this was specified by SUSv3 as part of
the XSI option; only the most recent version of the standard dropped
it. reportedly there's actual code using it.
| Rich Felker | 2 | -0/+34 |
| 2013-10-23 | fix inet_pton•••* parse IPv4 dotted-decimal correctly (without strtoul, no leading zeros)
* disallow single leading ':' in IPv6 address
* allow at most 4 hex digits in IPv6 address (according to RFC 2373)
* have enough hex fields in IPv4 mapped IPv6 address
* disallow leading zeros in IPv4 mapped IPv6 address
| Szabolcs Nagy | 1 | -26/+19 |
| 2013-10-22 | fix __ipparse to parse the generic numbers-and-dots IPv4 format correctly•••* allow at most 4 parts
* bounds check the parts correctly
* disallow leading whitespace and sign
* check the address family before falling back to IPv6
| Szabolcs Nagy | 1 | -5/+12 |
| 2013-10-22 | fix inet_aton to accept the generic "numbers-and-dots" IPv4 address format | Szabolcs Nagy | 1 | -1/+4 |
| 2013-10-21 | split inet_addr and inet_ntoa back into their own files•••despite being practically deprecated, these functions are still part
of the standard and thus cannot reside in a file that also contains
namespace pollution. this reverts some of the changes made in commit
e40f48a421a9176e3e298b5bac75f0355b219e58.
| Rich Felker | 3 | -16/+21 |
| 2013-10-20 | fix multiple minor namespace issues in headers•••fcntl.h: AT_* is not a reserved namespace so extensions cannot be
exposed by default.
langinfo.h: YESSTR and NOSTR were removed from the standard.
limits.h: NL_NMAX was removed from the standard.
signal.h: the conditional for NSIG was wrongly checking _XOPEN_SOURCE
rather than _BSD_SOURCE. this was purely a mistake; it doesn't even
match the commit message from the commit that added it.
| Rich Felker | 4 | -7/+15 |
| 2013-10-19 | fix return value for inet_pton in ipv6 failure cases•••in the case of input that does not match the expected form, the
correct return value is 0, not -1.
| Rich Felker | 1 | -6/+6 |
| 2013-10-18 | use consistent include guard name in arpa/ftp.h | Szabolcs Nagy | 1 | -2/+2 |
| 2013-10-18 | fix typo in socket.h (wrong macro name) | Szabolcs Nagy | 1 | -1/+1 |
| 2013-10-18 | in faccessat slow path, add close-on-exec to pipe fds•••as usual, this is needed to avoid fd leaks. as a better solution, the
use of fds could possibly be replaced with mmap and a futex.
| Rich Felker | 1 | -1/+1 |
| 2013-10-12 | fix uid/gid-setting error in faccessat with AT_EACCESS flag•••this fixes an issue reported by Daniel Thau whereby faccessat with the
AT_EACCESS flag did not work in cases where the process is running
suid or sgid but without root privileges. per POSIX, when the process
does not have "appropriate privileges", setuid changes the euid, not
the real uid, and the target uid must be equal to the current real or
saved uid; if this condition is not met, EPERM results. this caused
the faccessat child process to fail.
using the setreuid syscall rather than setuid works. POSIX leaves it
unspecified whether setreuid can set the real user id to the effective
user id on processes without "appropriate privileges", but Linux
allows this; if it's not allowed, there would be no way for this
function to work.
| Rich Felker | 1 | -2/+2 |
| 2013-10-08 | fix errno value for getcwd when size argument is zero•••based on patch by Michael Forney. at the same time, I've changed the
if branch to be more clear, avoiding the comma operator.
the underlying issue is that Linux always returns ERANGE when size is
too short, even when it's zero, rather than returning EINVAL for the
special case of zero as required by POSIX.
| Rich Felker | 1 | -1/+7 |
| 2013-10-07 | math: fix rare underflow issue in fma•••the issue is described in commits 1e5eb73545ca6cfe8b918798835aaf6e07af5beb
and ffd8ac2dd50f99c3c83d7d9d845df9874ec3e7d5
| Szabolcs Nagy | 3 | -13/+55 |
| 2013-10-07 | math: use sqrtl if FLT_EVAL_METHOD==2 in acosh and acoshf•••this makes acosh slightly more precise around 1.0 on i386
| Szabolcs Nagy | 2 | -0/+13 |
| 2013-10-07 | fix clockid macro names in time.h, reported by Paul Schutte | Szabolcs Nagy | 1 | -2/+2 |
| 2013-10-07 | remove errno setting from setenv, malloc sets it correctly on oom | Szabolcs Nagy | 1 | -1/+0 |
| 2013-10-07 | fix allocation sizes in regcomp•••sizeof had incorrect argument in a few places, the size was always
large enough so the issue was not critical.
| Szabolcs Nagy | 1 | -4/+4 |
| 2013-10-07 | add missing va_end in execl* for correcness and static code analyzers | Szabolcs Nagy | 3 | -0/+3 |
| 2013-10-07 | minor vfprintf and vfwprintf changes to please static code analyzers•••add missing va_end and remove some unnecessary code.
| Szabolcs Nagy | 2 | -6/+11 |
| 2013-10-06 | math: remove an unused variable from modfl | Szabolcs Nagy | 1 | -1/+0 |
| 2013-10-05 | slightly optimize __brk for size•••there is no reason to check the return value for setting errno, since
brk never returns errors, only the new value of the brk (which may be
the same as the old, or otherwise differ from the requested brk, on
failure).
it may be beneficial to eventually just eliminate this file and make
the syscalls inline in malloc.c.
| Rich Felker | 1 | -1/+1 |
| 2013-10-05 | fix failure of malloc to set errno on heap (brk) exhaustion•••I wrongly assumed the brk syscall would set errno, but on failure it
returns the old value of the brk rather than an error code.
| Rich Felker | 1 | -0/+1 |
| 2013-10-04 | fix failure to check malloc result in setenv | Rich Felker | 1 | -9/+9 |
| 2013-10-04 | math: remove code duplication in erfl found by clang analyzer•••erfl had some superflous code left around after the last erf cleanup.
the issue was reported by Alexander Monakov
| Szabolcs Nagy | 1 | -13/+2 |
| 2013-10-04 | math: remove a useless assignment in lgammal found by clang analyzer•••the issue was reported by Alexander Monakov
| Szabolcs Nagy | 1 | -2/+2 |
| 2013-10-04 | fix invalid implicit pointer conversion in pthread_key_create | Rich Felker | 1 | -1/+1 |
| 2013-10-04 | fix uninitialized variable in dladdr•••the affected branch only applies for DSOs that lack standard hash
table and only have the GNU hash table present.
| Rich Felker | 1 | -1/+1 |
| 2013-10-04 | removed unused variable in vfwprintf | Rich Felker | 1 | -2/+1 |
| 2013-10-03 | fix new environment always being null with execle•••the va_arg call for the argv[]-terminating null pointer was missing,
so this pointer was being wrongly used as the environment pointer.
issue reported by Timo Teräs. proposed patch slightly modified to
simplify the resulting code.
| Rich Felker | 1 | -2/+1 |
