md5, sha1, sha256, sha512: add gl_SET_CRYPTO_CHECK_DEFAULT

[gnulib.git] / doc / posix-functions / getchar.texi

diff --git a/doc/posix-functions/getchar.texi b/doc/posix-functions/getchar.texi
index 5bc841d..f1dfe9d 100644 (file)
--- a/doc/posix-functions/getchar.texi
+++ b/doc/posix-functions/getchar.texi
@@ -2,17 +2,29 @@
 @section @code{getchar}
 @findex getchar
 
-POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getchar.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/getchar.html}
 
-Gnulib module: ---
+Gnulib module: stdio, nonblocking
 
-Portability problems fixed by Gnulib:
+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, MSVC 9.
 @end itemize
 
 Portability problems not fixed by Gnulib:
 @itemize
 @item
+C99 and POSIX.1-2001 and later require end-of-file to be sticky, that
+is, they require this function to act as if it reads end-of-file if
+@code{feof} would return nonzero.  However, on some systems this
+function attempts to read from the underlying file descriptor even if
+the stream's end-of-file indicator is set.  These systems include
+glibc and default Solaris.
+@item
 On Windows platforms (excluding Cygwin), this function does not set @code{errno}
 upon failure.
 @end itemize