| @node setenv |
| @section @code{setenv} |
| @findex setenv |
| |
| POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/setenv.html} |
| |
| Gnulib module: setenv |
| |
| Portability problems fixed by Gnulib: |
| @itemize |
| @item |
| This function is missing on some platforms: |
| HP-UX 11.23, IRIX 6.5, Solaris 9, mingw, MSVC 14. |
| @item |
| On some platforms, this function does not fail with @samp{EINVAL} when |
| passed an empty string or a string containing @samp{=}: |
| Mac OS 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 |
