Date: Wed, 21 Aug 2013 22:40:01 GMT From: Jilles Tjoelker <jilles@stack.nl> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/181439: [headers] sys/wait.h is not enough to use waitid(), but kind of should be. Message-ID: <201308212240.r7LMe1DV060210@freefall.freebsd.org>
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The following reply was made to PR kern/181439; it has been noted by GNATS. From: Jilles Tjoelker <jilles@stack.nl> To: bug-followup@FreeBSD.org, xnox@debian.org Cc: Subject: Re: kern/181439: [headers] sys/wait.h is not enough to use waitid(), but kind of should be. Date: Thu, 22 Aug 2013 00:30:50 +0200 In PR kern/181439, you wrote: > [<sys/wait.h> does not define siginfo_t] POSIX says that <sys/wait.h> shall define siginfo_t and may make visible all symbols from <signal.h>. This means that POSIX requires the application to #include <signal.h> explicitly if it wants to use the constants like SIGCHLD and CLD_EXITED. Therefore, I expect most applications to need an explicit #include <signal.h> anyway. To minimize namespace pollution, it would be best to create a new header that defines siginfo_t and include it from <signal.h> and <sys/wait.h>, or to duplicate the definition. Adding the #include to <sys/wait.h> would be simpler. If this is the way it should work, then it would be best to try to change POSIX to allow only this. -- Jilles Tjoelker
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