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@node putc
@section @code{putc}
@findex putc
POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/putc.html}
Gnulib module: stdio, sigpipe
Portability problems fixed by Gnulib:
@itemize
@item
When writing to a pipe with no readers, this function fails, instead of
obeying the current @code{SIGPIPE} handler, 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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