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2016-10-06fix regexec with haystack strings longer than INT_MAXRich Felker-26/+28
we inherited from TRE regexec code that's utterly wrong with respect to the integer types it's using. while it doesn't appear that compilers are producing unsafe output, signed integer overflows seem to happen, and regexec fails to find matches past offset INT_MAX. this patch fixes the type of all variables/fields used to store offsets in the string from int to regoff_t. after the changes, basic testing showed that regexec can now find matches past 2GB (INT_MAX) and past 4GB on x86_64, and code generation is unchanged on i386.
2016-10-06fix missing integer overflow checks in regexec buffer size computationsRich Felker-5/+18
most of the possible overflows were already ruled out in practice by regcomp having already succeeded performing larger allocations. however at least the num_states*num_tags multiplication can clearly overflow in practice. for safety, check them all, and use the proper type, size_t, rather than int. also improve comments, use calloc in place of malloc+memset, and remove bogus casts.
2016-10-06fix strftime %y for negative tm_yearSzabolcs Nagy-0/+1
2016-09-24fix getservby*_r result pointer value on errorDaniel Sabogal-0/+3
this is a clone of the fix to the gethostby*_r functions in commit fe82bb9b921be34370e6b71a1c6f062c20999ae0. the man pages document that the getservby*_r functions set this pointer to NULL if there was an error or if no record was found.
2016-09-24remove dead case in gethostbyname2_rDaniel Sabogal-2/+0
this case statement was accidently left behind when this function was refactored in commit e8f39ca4898237cf71657500f0b11534c47a0521.
2016-09-19fix undefined behavior in sched.h cpu_set_t usageRich Felker-3/+3
since cpu sets can be dynamically allocated and have variable size, accessing their contents via ->__bits is not valid; performing pointer arithmetic outside the range of the size of the declared __bits array results in undefined beahavior. instead, only use cpu_set_t for fixed-size cpu set objects (instantiated by the caller) and as an abstract pointer type for dynamically allocated ones. perform all accesses simply by casting the abstract pointer type cpuset_t * back to unsigned long *.
2016-09-18simplify/refactor fflush and make fflush_unlocked an alias for fflushRich Felker-30/+23
previously, fflush_unlocked was an alias for an internal backend that was called by fflush, either for its argument or in a loop for each file if a null pointer was passed. since the logic for the latter was in the main fflush function, fflush_unlocked crashed when passed a null pointer, rather than flushing all open files. since fflush_unlocked is not a standard function and has no specification, it's not clear whether it should be expected to accept null pointers like fflush does, but a reasonable argument could be made that it should. this patch eliminates the helper function, simplifying fflush, and makes fflush_unlocked an alias for fflush, which is valid because the two functions agree in their behavior in all cases where their behavior is defined (the unlocked version has undefined behavior if another thread could hold locks).
2016-09-16add missing *_unlocked and wcsftime_l prototypes to wchar.hDaniel Sabogal-0/+15
these functions had been implemented, but prototypes were not made available
2016-09-16fix if_indextoname error caseDaniel Sabogal-1/+6
posix requires errno to be set to ENXIO if the interface does not exist. linux returns ENODEV instead so we handle this.
2016-09-16fix ifru_data and ifcu_buf types in net/if.hDaniel Sabogal-2/+2
glibc, freebsd, and openbsd use character pointers (caddr_t) for these fields. only linux uses void pointer for the ifru_data type.
2016-09-16fix printf regression with alt-form octal, zero flag, and field widthRich Felker-1/+1
commit b91cdbe2bc8b626aa04dc6e3e84345accf34e4b1, in fixing another issue, changed the logic for how alt-form octal adds the leading zero to adjust the precision rather than using a prefix character. this wrongly suppressed the zero flag by mimicing an explicit precision given by the format string. switch back to using a prefix character. based on bug report and patch by Dmitry V. Levin, but simplified.
2016-08-30restore _Noreturn to __assert_failRich Felker-2/+2
this reverts commit 2c1f8fd5da3306fd7c8a2267467e44eb61f12dd4. without the _Noreturn attribute, the compiler cannot use asserts to perform reachability/range analysis. this leads to missed optimizations and spurious warnings. the original backtrace problem that prompted the removal of _Noreturn was not clearly documented at the time, but it seems to happen only when libc was built without -g, which also breaks many other backtracing cases.
2016-08-30getdtablesize: fix returning hard instead of soft rlimitOlivier Brunel-1/+1
This makes the result consistent with sysconf(_SC_OPEN_MAX).
2016-08-30fix FFSYNC by changing it to O_SYNCDuncan Overbruck-1/+1
O_FSYNC was never defined and is legacy/wrong, nothing seems to use it.
2016-08-30configure: handle mipsisa64* triplet as a mips64 targetSzabolcs Nagy-1/+1
the gnu config.sub script recognizes several mipsisa64* cpu types that musl supports as mips64 targets.
2016-08-30math: fix 128bit long double inverse trigonometric functionsSzabolcs Nagy-1/+1
there was a copy paste error that could cause large ulp errors in atan2l, atanl, asinl and acosl on aarch64, mips64 and mipsn32. (the implementation is from freebsd fdlibm, but the tail end of the polynomial was wrong. 128 bit long double functions are not yet tested so this went undetected.)
2016-08-30verify that ttyname refers to the same file as the fdSzabolcs Nagy-4/+11
linux containers use separate mount namespace so the /proc symlink might not point to the right device if the fd was opened in the parent namespace, in this case return ENOENT.
2016-08-30microblaze: add syscall numbers from linux v4.7Szabolcs Nagy-0/+3
userfaultfd, membarrier and mlock2 syscalls got wired up in linux commit fbce3befd60d40639bf3c6b60f7477b2f988f92d
2016-08-30add SS_AUTODISARM sigaltstack ss_flags from linux v4.7 to signal.hSzabolcs Nagy-0/+2
only matters if swapcontext is used in a signal handler running on an altstack, new in linux commit 2a74213838104a41588d86fd5e8d344972891ace
2016-08-30add UDP_ENCAP_GTP0, UDP_ENCAP_GTP1U from linux v4.7 to netinet/udp.hSzabolcs Nagy-0/+2
for GPRS tunneling protocol, new in linux commit 459aa660eb1d8ce67080da1983bb81d716aa5a69
2016-08-30add PF_QIPCRTR, AF_QIPCRTR from linux v4.7 to sys/socket.hSzabolcs Nagy-1/+3
macros for qualcom ip router protocol, new in linux commit bdabad3e363d825ddf9679dd431cca0b2c30f881
2016-08-11fix pread/pwrite syscall calling convention on shRich Felker-2/+7
despite sh not generally using register-pair alignment for 64-bit syscall arguments, there are arch-specific versions of the syscall entry points for pread and pwrite which include a dummy argument for alignment before the 64-bit offset argument.
2016-07-13revert unrelated change that slipped into last commitRich Felker-1/+1
2016-07-13fix regression in tcsetattr on all mips archsRich Felker-10/+10
revert commit 8c316e9e49d37ad92c2e7493e16166a2afca419f. it was wrong and does not match how the kernel API works.
2016-07-07fix asctime day/month names not to vary by localeRich Felker-5/+4
the FIXME comment here was overlooked at the time locale support was added.
2016-07-06remove obsolete and unused gethostbyaddr implementationRich Felker-52/+0
this code was already under #if 0, but could be confusing if a reader didn't notice that, and it's almost surely full of bugs and/or inconsistencies with the current code that uses the gethostbyname2_r backend.
2016-07-06remove obsolete gitignore rulesBobby Bingham-2/+0
Since commit 2f853dd6b9a95d5b13ee8f9df762125e0588df5d, all generated headers are generated under the obj directory, which is already ignored.
2016-07-06remove or1k version of sem.hBobby Bingham-11/+0
It's identical to the generic version, after evaluating the endian preprocessor checks in the generic version.
2016-07-05release 1.1.15v1.1.15Rich Felker-1/+40
2016-07-03add stdc-predef.h for library-level predefined macrosRich Felker-0/+10
modern compilers (for gcc, versions 4.8 and later) automatically pre-include <stdc-predef.h> to obtain the values of certain predefined macros specified by ISO C but which reflect properties of the library implementation, not just the compiler. provide values indicating that wchar_t is Unicode-encoded and that Annex F (IEEE floating point) is supported unless the compiler indicates otherwise. based on patch by Masanori Ogino.
2016-07-03improve abort fallback behavior when raising SIGABRT fails to terminateRich Felker-1/+5
these changes still do not yield a fully-conforming abort, but they fix two known issues: - per POSIX, termination via SIGKILL is not "abnormal", but both ISO C and POSIX require abort to yield abnormal termination. - raising SIGKILL fails to do anything to pid 1 in some containers. now, the trapping instruction produced by a_crash() is expected to produce abnormal termination, without the risk of invoking a signal handler since SIGILL and SIGSEGV are blocked, and _Exit, which contains an infinite loop analogous to the one being removed from abort itself, is used as a last resort. this implementation still fails to produce an exit status as if the process terminated via SIGABRT in cases where SIGABRT is blocked or ignored, but fixing that is not easy; the obvious pseudo-solutions all have subtle race conditions where a concurrent fork or exec can expose incorrect signal state.
2016-07-03make brace placement in public header typedef'd structs consistentRich Felker-34/+17
commit befa5866ee30d09c0c96e88af2eabff5911342ea performed this change for struct definitions that did not also involve typedef, but omitted the latter.
2016-07-03add EF_SH_ sh specific macros to elf.hSzabolcs Nagy-1/+22
last time elf.h was thoroughly updated sh was not yet supported so these processor specific e_flags were missing.
2016-07-03add NT_ARM_SYSTEM_CALL to elf.hSzabolcs Nagy-0/+1
new regset in linux v3.18 for ptrace.
2016-07-03add missing x86 relocs to elf.hSzabolcs Nagy-2/+5
see https://sourceware.org/ml/libc-alpha/2016-01/msg00822.html
2016-07-03add DT_MIPS_RLD_MAP_REL to elf.hSzabolcs Nagy-1/+2
marks different RLD_MAP for debugging PIE binaries.
2016-07-03add SHF_COMPRESSED section flag to elf.hSzabolcs Nagy-0/+23
following http://www.sco.com/developers/gabi/latest/ch4.sheader.html
2016-07-03add powerpc tls optimization related definitions to elf.hSzabolcs Nagy-2/+6
see https://sourceware.org/ml/libc-alpha/2015-03/msg00580.html
2016-07-03add nios2 definitions to elf.hSzabolcs Nagy-0/+50
2016-07-03update elf.h with mips abi flags supportSzabolcs Nagy-1/+70
following https://sourceware.org/ml/libc-alpha/2014-05/msg00332.html
2016-07-03update elf.h with new aarch64 relocsSzabolcs Nagy-1/+13
add ilp32 related relocs and alternative names for a few macros following https://sourceware.org/ml/libc-alpha/2014-11/msg00455.html
2016-07-03update elf.h with powerpc64 elfv2 abi related macrosSzabolcs Nagy-2/+8
see https://sourceware.org/ml/libc-alpha/2013-11/msg00315.html https://sourceware.org/ml/libc-alpha/2013-11/msg00314.html
2016-07-03add new powerpc64 relocations to elf.hSzabolcs Nagy-0/+9
following the corresponding binutils and glibc changes https://sourceware.org/ml/binutils/2013-10/msg00372.html
2016-07-03add EM_OPENRISC again to elf.hSzabolcs Nagy-0/+1
it was changed to EM_OR1K in 200d15479c0bc48471ee7b8e538ce33af990f82e as that was meant to be the official name, but glibc and the latest gabi spec still uses the EM_OPENRISC name: http://www.sco.com/developers/gabi/latest/ch4.eheader.html binutils defines both macros so we should do the same for backward compatibility.
2016-07-03make brace placement in public header struct definitions consistentRich Felker-200/+100
placing the opening brace on the same line as the struct keyword/tag is the style I prefer and seems to be the prevailing practice in more recent additions. these changes were generated by the command: find include/ arch/*/bits -name '*.h' \ -exec sed -i '/^struct [^;{]*$/{N;s/\n/ /;}' {} + and subsequently checked by hand to ensure that the regex did not pick up any false positives.
2016-07-03fix misplaced indention in sys/procfs.hRich Felker-1/+1
2016-07-03format mips bits/termios.h consistently mips64 and n32 versionsRich Felker-2/+1
with this change, all three files are identical.
2016-07-03fix CBAUDEX in powerpc termios.hSzabolcs Nagy-2/+2
it seems it was a typo.
2016-07-03fix TCS* definitions in mips termios.hSzabolcs Nagy-9/+9
these were incorrectly using the generic definitions.
2016-07-03fix mips termios.h macro exposure/namespace issuesSzabolcs Nagy-45/+42
same changes to the defined macros as in powerpc and generic bits.
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