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authorRichard Maw <richard.maw@codethink.co.uk>2012-01-17 14:43:55 +0000
committerRichard Maw <richard.maw@codethink.co.uk>2012-01-17 14:43:55 +0000
commit2de9abc5c9d40b3c716307d67d16146f823fd554 (patch)
tree6979db67934ddc8b564150b465846a383b428ff8 /gnulib/doc/posix-functions/putchar.texi
parent33cc1c6fda6e72a7bae1401e9b2cec495a4d3ff1 (diff)
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+@node putchar
+@section @code{putchar}
+@findex putchar
+
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/putchar.html}
+
+Gnulib module: stdio, nonblocking, sigpipe
+
+Portability problems fixed by Gnulib module @code{stdio}, together with module @code{nonblocking}:
+@itemize
+@item
+When writing to a non-blocking pipe whose buffer is full, this function fails
+with @code{errno} being set to @code{ENOSPC} instead of @code{EAGAIN} on some
+platforms:
+mingw, MSVC 9.
+@end itemize
+
+Portability problems fixed by Gnulib module @code{stdio}, together with module @code{sigpipe}:
+@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, MSVC 9.
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+On Windows platforms (excluding Cygwin), this function does not set @code{errno}
+upon failure.
+@item
+On some platforms, this function does not set @code{errno} or the
+stream error indicator on attempts to write to a read-only stream:
+Cygwin 1.7.9.
+@end itemize