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@node getchar
@section @code{getchar}
@findex getchar
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getchar.html}
Gnulib module: stdio, nonblocking
Portability problems fixed by Gnulib module @code{stdio}, together with module @code{nonblocking}:
@itemize
@item
When reading from a non-blocking pipe whose buffer is empty, this function
fails with @code{errno} being set to @code{EINVAL} instead of @code{EAGAIN} on
some platforms:
mingw.
@end itemize
Portability problems not fixed by Gnulib:
@itemize
@item
On Windows platforms (excluding Cygwin), this function does not set @code{errno}
upon failure.
@end itemize
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