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* fix issue with longjmp out of signal handlers and cancellationRich Felker2012-05-234-52/+35
| | | | | | | | | | | | | | | | | | | stale state information indicating that a thread was possibly blocked at a cancellation point could get left behind if longjmp was used to exit a signal handler that interrupted a cancellation point. to fix the issue, we throw away the state information entirely and simply compare the saved instruction pointer to a range of code addresses in the __syscall_cp_asm function. all the ugly PIC work (which becomes minimal anyway with this approach) is defered to cancellation time instead of happening at every syscall, which should improve performance too. this commit also fixes cancellation on arm, which was mildly broken (race condition, not checking cancellation flag once inside the cancellation point zone). apparently i forgot to implement that. the new arm code is untested, but appears correct; i'll test and fix it later if there are problems.
* simplify cancellation push/pop slightlyRich Felker2012-05-232-12/+9
| | | | | no need to pass unnecessary extra arguments on to the core code in pthread_create.c. this just wastes cycles and code bloat.
* debloat jmp_buf in _GNU_SOURCE modeRich Felker2012-05-231-3/+0
| | | | | | | | i originally made it the same size as the bloated GNU version, which contains space for saved signal mask, but this makes some structures containing jmp_buf become much larger for no benefit. we will never use the signal mask field with plain setjmp; sigsetjmp serves that purpose.
* remove everything related to forkallRich Felker2012-05-224-78/+0
| | | | | | | | | | i made a best attempt, but the intended semantics of this function are fundamentally contradictory. there is no consistent way to handle ownership of locks when forking a multi-threaded process. the code could have worked by accident for programs that only used normal mutexes and nothing else (since they don't actually store or care about their owner), but that's about it. broken-by-design interfaces that aren't even in glibc (only solaris) don't belong in musl.
* some feature test fixes for unistd.hRich Felker2012-05-221-16/+16
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* fix missing _BSD_SOURCE support in bits/*.hRich Felker2012-05-229-12/+12
| | | | | | | | | | | | this is actually rather ugly, and would get even uglier if we ever want to support further feature test macros. at some point i may factor the bits headers into separate files for C base, POSIX base, and nonstandard extensions (the only distinctions that seem to matter now) and then the logic for which to include can go in the main header rather than being duplicated for each arch. the downside of this is that it would result in more files having to be opened during compilation, so as long as the ugliness does not grow, i'm inclined to leave it alone for now.
* _GNU_SOURCE implies all BSD features except ones GNU rejectsRich Felker2012-05-221-1/+1
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* various header cleanups, some related to _BSD_SOURCE additionRich Felker2012-05-223-17/+9
| | | | | | there is no reason to avoid multiple identical macro definitions; this is perfectly legal C, and even with the maximal warning options enabled, gcc does not issue any warning for it.
* bsd_signal is a legacy (removed) XSI function, not needed in _BSD_SOURCERich Felker2012-05-221-4/+1
| | | | | its only purpose was for use on non-BSD systems that implement sysv semantics for signal() by default.
* support _BSD_SOURCE feature test macroRich Felker2012-05-2222-41/+126
| | | | | patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible.
* fix typo in utimes function that made it mess up file timesRich Felker2012-05-211-1/+1
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* fix out-of-bounds array access in pthread barriers on 64-bitRich Felker2012-05-211-1/+1
| | | | | it's ok to overlap with integer slot 3 on 32-bit because only slots 0-2 are used on process-local barriers.
* move getpass decl to the right placeRich Felker2012-05-202-1/+1
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* fix misplaced semicolon in preprocessor directive (#undef h_errno)Rich Felker2012-05-161-1/+1
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* yet another try to get the check for gcc right...Rich Felker2012-05-141-1/+1
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* fix error in last configure change (lack of escaping)Rich Felker2012-05-141-1/+1
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* useless lastlog path just to make some stuff happyRich Felker2012-05-141-0/+1
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* missing limit LOGIN_NAME_MAXRich Felker2012-05-141-0/+1
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* correct the check for gcc (previous version failed for cross compilers)Rich Felker2012-05-131-1/+1
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* remove some no-op end of string tests from regex parserRich Felker2012-05-131-4/+0
| | | | | | | | these are cruft from the original code which used an explicit string length rather than null termination. i blindly converted all the checks to null terminator checks, without noticing that in several cases, the subsequent switch statement would automatically handle the null byte correctly.
* another BRE fix: in ^*, * is literalRich Felker2012-05-131-0/+2
| | | | | | i don't understand why this has to be conditional on being in BRE mode, but enabling this code unconditionally breaks a huge number of ERE test cases.
* let sysconf accurately report # of cpus availableRich Felker2012-05-131-2/+10
| | | | | i've been trying out openmp and it seems like it won't be much use without this...
* use __h_errno_location for h_errnoRich Felker2012-05-123-1/+14
| | | | | | we do not bother making h_errno thread-local since the only interfaces that use it are inherently non-thread-safe. but still use the potentially-thread-local ABI to access it just to avoid lock-in.
* susv4 removed gethostbyname, etc. legacy cruft.Rich Felker2012-05-121-9/+7
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* namespace cleanup - NI_* is NOT reserved by netdb.hRich Felker2012-05-121-3/+2
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* some gnu junk in netdb.hRich Felker2012-05-121-0/+8
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* fix missing va_list for vsyslogRich Felker2012-05-121-2/+2
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* search: add comments to tsearch_avl.cnsz2012-05-131-0/+6
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* search: add tdestroy (gnu extension)nsz2012-05-132-0/+23
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* add missing IN6_ARE_ADDR_EQUALRich Felker2012-05-111-0/+5
| | | | | written to avoid multiple conditional jumps and avoid ugly repetitive lines in the header file.
* add one more bogus legacy headerRich Felker2012-05-101-0/+9
| | | | | | | this one is for program(s|ers) who haven't heard of uint16_t and uint32_t (which are obviously the correct types for use in such situations, as they're the argument/return types for ntohs/htons and ntohl/htonl).
* move vsyslog out of SYSLOG_NAMES conditionalRich Felker2012-05-101-2/+4
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* Merge remote-tracking branch 'nsz/master'Rich Felker2012-05-103-5/+8
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| * math: fix remquo.c when x==-y and a subnormal remainder bug as wellnsz2012-05-083-5/+8
| | | | | | | | | | backported fix from freebsd: http://svnweb.FreeBSD.org/base?view=revision&revision=233973
* | remove __lock dependency from exitRich Felker2012-05-101-2/+4
| | | | | | | | | | | | | | there's no sense in using a powerful lock in exit, because it will never be unlocked. a thread that arrives at exit while exit is already in progress just needs to hang forever. use the pause syscall for this because it's cheap and easy and universally available.
* | fix missing static (namespace clash)Rich Felker2012-05-101-1/+1
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* | fix missing parens in bit op macros (param.h)Rich Felker2012-05-101-1/+1
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* | and another bug in setbit, etc. macros..Rich Felker2012-05-101-1/+1
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* | fix typo in sys/param.h that broke setbit, etc. macrosRich Felker2012-05-101-1/+1
| | | | | | | | this is all junk, but some programs use it.
* | omit declaration of basename wrongly interpreted as prototype in C++Rich Felker2012-05-091-0/+2
|/ | | | | | | | | | | | | | | | | | | the non-prototype declaration of basename in string.h is an ugly compromise to avoid breaking 2 types of broken software: 1. programs which assume basename is declared in string.h and thus would suffer from dangerous pointer-truncation if an implicit declaration were used. 2. programs which include string.h with _GNU_SOURCE defined but then declare their own prototype for basename using the incorrect GNU signature for the function (which would clash with a correct prototype). however, since C++ does not have non-prototype declarations and interprets them as prototypes for a function with no arguments, we must omit it when compiling C++ code. thankfully, all known broken apps that suffer from the above issues are written in C, not C++.
* some assemblers don't like fistpq; use the alt. mnemonic fistpllRich Felker2012-05-073-3/+3
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* fix error checking for \ at end of regex (this was broken previously)Rich Felker2012-05-071-1/+1
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* fix copy and paste error in regex code causing mishandling of \) in BRERich Felker2012-05-071-1/+1
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* fix regex breakage in last commit (failure to handle empty regex, etc.)Rich Felker2012-05-071-4/+1
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* fix ugly bugs in TRE regex parserRich Felker2012-05-071-60/+31
| | | | | | | | | | | | | | | | | | | | | | 1. * in BRE is not special at the beginning of the regex or a subexpression. this broke ncurses' build scripts. 2. \\( in BRE is a literal \ followed by a literal (, not a literal \ followed by a subexpression opener. 3. the ^ in \\(^ in BRE is a literal ^ only at the beginning of the entire BRE. POSIX allows treating it as an anchor at the beginning of a subexpression, but TRE's code for checking if it was at the beginning of a subexpression was wrong, and fixing it for the sake of supporting a non-portable usage was too much trouble when just removing this non-portable behavior was much easier. this patch also moved lots of the ugly logic for empty atom checking out of the default/literal case and into new cases for the relevant characters. this should make parsing faster and make the code smaller. if nothing else it's a lot more readable/logical. at some point i'd like to revisit and overhaul lots of this code...
* update release info for 0.9.0 v0.9.0Rich Felker2012-05-062-5/+8
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* some extra legacy header stuffRich Felker2012-05-063-0/+32
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* add FORCE_EVAL macro to evaluate float expr for their side effectnsz2012-05-066-24/+25
| | | | | updated nextafter* to use FORCE_EVAL, it can be used in many other places in the math code to improve readability.
* fix unused variable warnings in new nextafter/nexttoward codeRich Felker2012-05-065-6/+12
| | | | | | | apparently initializing a variable is not "using" it but assigning to it is "using" it. i don't really like this fix, but it's better than trying to make a bigger cleanup just before a release, and it should work fine (tested against nsz's math tests).
* take byte order from gcc if gcc has defined itRich Felker2012-05-061-0/+4
| | | | | | | this only works with gcc 4.6 and later, but it allows us to support non-default endianness on archs like arm, mips, ppc, etc. that can do both without having separate header sets for both variants, and it saves one #include even on fixed-endianness archs like x86.
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