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gnulib/doc/posix-functions/setenv.texi
2010-03-21 23:24:17 +01:00

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@node setenv
@section @code{setenv}
@findex setenv
POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/setenv.html}
Gnulib module: setenv
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
AIX 4.3.2, HP-UX 11, IRIX 6.5, Solaris 9, mingw, BeOS.
@item
On some platforms, this function does not fail with @samp{EINVAL} when
passed an empty string or a string containing @samp{=}:
MacOS X 10.5, FreeBSD 6.0, NetBSD 1.6, OpenBSD 3.8, Cygwin 1.5.x.
@item
On some platforms, this function removes a leading @samp{=} from the
value argument:
Cygwin 1.5.x.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
Older versions of POSIX required that @code{setenv(NULL,"",0)} gracefully
fail with @code{EINVAL}, but not all implementations guarantee this,
and the requirement was removed.
@end itemize