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@node getlogin
@section @code{getlogin}
@findex getlogin
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/getlogin.html}
Gnulib module: getlogin
Portability problems fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
older mingw, MSVC 14.
@item
This function is not declared unless @code{_POSIX} is defined on some platforms:
mingw.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
This function returns an empty string even when standard input is a tty
on some platforms:
HP-UX 11.11.
@end itemize
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