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view doc/posix-functions/unsetenv.texi @ 39913:73d60b1f9c96
doc: Update for Solaris 11.4.
* doc/**/*.texi: For bugs that exist in both Solaris 11.3 and 11.4,
mention Solaris 11.4.
* m4/printf.m4: Update comments about Solaris.
* m4/log.m4: Likewise.
* m4/log10.m4: Likewise.
* m4/logb.m4: Likewise.
* m4/logbf.m4: Likewise.
* m4/logbl.m4: Likewise.
* m4/rename.m4: Likewise.
* m4/wcrtomb.m4: Likewise.
* m4/hostent.m4: Likewise.
* m4/servent.m4: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 14 Oct 2018 09:33:46 +0200 |
parents | 11af6bbd6df5 |
children |
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@node unsetenv @section @code{unsetenv} @findex unsetenv POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/unsetenv.html} Gnulib module: unsetenv Portability problems fixed by Gnulib: @itemize @item This function is missing on some platforms: AIX 5.1, HP-UX 11.23, IRIX 6.5, Solaris 9, mingw, MSVC 14, BeOS. @item This function is not declared on some platforms: OSF/1 5.1. @item This function has the return type @samp{void} instead of @samp{int} on some platforms: Mac OS X 10.3, FreeBSD 6.0, NetBSD 1.6, OpenBSD 3.8, OSF/1 5.1. @item On some platforms, this function does not fail with @samp{EINVAL} when passed an empty string or a string containing @samp{=}: FreeBSD 6.0, NetBSD 1.6, OpenBSD 4.7. @item This function removes only the first value association for the given environment variable, not all of them, on some platforms: Solaris 11.4, Haiku. @end itemize Portability problems not fixed by Gnulib: @itemize @item Older versions of POSIX required that @code{unsetenv(NULL)} gracefully fail with @code{EINVAL}, but not all implementations guarantee this, and the requirement was removed. @end itemize