Date: Wed, 25 Jul 2007 13:02:03 +0400 From: Andrey Chernov <ache@nagual.pp.ru> To: "Daniel O'Connor" <doconnor@gsoft.com.au>, sergei@FreeBSD.org, scf@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: zsh oddities with recent -current Message-ID: <20070725090203.GA87414@nagual.pp.ru> In-Reply-To: <20070725084755.GA75871@nagual.pp.ru> References: <200707251733.12658.doconnor@gsoft.com.au> <20070725084755.GA75871@nagual.pp.ru>
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[-- Attachment #1 --] On Wed, Jul 25, 2007 at 12:47:56PM +0400, Andrey Chernov wrote: > On Wed, Jul 25, 2007 at 05:33:05PM +0930, Daniel O'Connor wrote: > > I updated my -current box (laptop) on the 18th and I have 2 strange > > issues with zsh. > > > > 1) I can't unset environmental variables set before the shell started, > > eg.. > > zsh uses system's putenv() but home-rolled delete from environment > (instead of unsetenv()). It clearly violates POSIX since it forbids to mix > putenv/setenv/unsetenv with direct environ manipulations: > > "Conforming applications are required not to modify environ directly, but > to use only the functions described here to manipulate the process > environment as an abstract object. Thus, the implementation of the > environment access functions has complete control over the data structure > used to represent the environment (subject to the requirement that environ > be maintained as a list of strings with embedded equal signs for > applications that wish to scan the environment). This constraint allows > the implementation to properly manage the memory it allocates, either by > using allocated storage for all variables (copying them on the first > invocation of setenv() or unsetenv()), or keeping track of which strings > are currently in allocated space and which are not, via a separate table > or some other means." > > Quick fix will be just to disable HAVE_PUTENV config option. It gains > nothing in the code but makes troubles. The patch is here: --- configure.bak 2006-02-28 17:44:59.000000000 +0300 +++ configure 2007-07-25 12:59:34.000000000 +0400 @@ -10218,7 +10218,7 @@ setlocale \ uname \ signgam \ - putenv getenv \ + getenv \ brk sbrk \ pathconf sysconf \ tgetent tigetflag tigetnum tigetstr setupterm \ -- http://ache.pp.ru/ [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFGpxGLVg5YK5ZEdN0RAv02AJ0cjgCH4QZ9/RrLB6nA/hg6dvQqpACgl1uY 8Ib7gkT3j5GdLt6rNpIuUKE= =mHCl -----END PGP SIGNATURE-----
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