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* overhaul implementation-internal signal protectionsRich Felker2011-05-071-1/+1
| | | | | | | | | | | | | | | | | | | the new approach relies on the fact that the only ways to create sigset_t objects without invoking UB are to use the sig*set() functions, or from the masks returned by sigprocmask, sigaction, etc. or in the ucontext_t argument to a signal handler. thus, as long as sigfillset and sigaddset avoid adding the "protected" signals, there is no way the application will ever obtain a sigset_t including these bits, and thus no need to add the overhead of checking/clearing them when sigprocmask or sigaction is called. note that the old code actually *failed* to remove the bits from sa_mask when sigaction was called. the new implementations are also significantly smaller, simpler, and faster due to ignoring the useless "GNU HURD signals" 65-1024, which are not used and, if there's any sanity in the world, never will be used.
* remove -Wno-pointer-sign example from dist/config.makRich Felker2011-03-251-1/+0
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* document in config.mak sample that x86_64 is supportedRich Felker2011-02-171-1/+1
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+25