maint.mk: use info-gnu@ as the default only for a stable release

[pspp] / doc / posix-functions / putchar.texi

diff --git a/doc/posix-functions/putchar.texi b/doc/posix-functions/putchar.texi
index 16cd0aba63c564a11cce640b4dd4c5e1e6685608..aeb6b4307ccda8f1527d53968b35ebbbde4f3faa 100644 (file)
--- a/doc/posix-functions/putchar.texi
+++ b/doc/posix-functions/putchar.texi
@@ -2,12 +2,25 @@
 @section @code{putchar}
 @findex putchar
 
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/putchar.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/putchar.html}
 
-Gnulib module: ---
+Gnulib module: stdio, nonblocking, sigpipe
 
-Portability problems fixed by Gnulib:
+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.
+@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.
 @end itemize
 
 Portability problems not fixed by Gnulib: