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-rw-r--r--doc/posix-functions/fprintf.texi15
1 files changed, 11 insertions, 4 deletions
diff --git a/doc/posix-functions/fprintf.texi b/doc/posix-functions/fprintf.texi
index 513777c0a4..3ee74b41ae 100644
--- a/doc/posix-functions/fprintf.texi
+++ b/doc/posix-functions/fprintf.texi
@@ -4,9 +4,9 @@
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html}
-Gnulib module: fprintf-posix or stdio, nonblocking, sigpipe
+Gnulib module: fprintf-posix or fprintf-gnu or stdio, nonblocking, sigpipe
-Portability problems fixed by Gnulib module @code{fprintf-posix}:
+Portability problems fixed by either Gnulib module @code{fprintf-posix} or @code{fprintf-gnu}:
@itemize
@item
This function does not support size specifiers as in C99 (@code{hh}, @code{ll},
@@ -77,7 +77,14 @@ This function can crash in out-of-memory conditions on some platforms:
FreeBSD 13.0, NetBSD 5.0.
@end itemize
-Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{nonblocking}:
+Portability problems fixed by Gnulib module @code{fprintf-gnu}:
+@itemize
+@item
+This function does not support the @samp{B} directive on some platforms:
+glibc 2.34, FreeBSD 13.1, NetBSD 9.0, OpenBSD 7.2, macOS 12.5, AIX 7.2, Solaris 11.4, and others.
+@end itemize
+
+Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix} or @code{fprintf-gnu}, together with module @code{nonblocking}:
@itemize
@item
When writing to a non-blocking pipe whose buffer is full, this function fails
@@ -86,7 +93,7 @@ platforms:
mingw, MSVC 14.
@end itemize
-Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix}, together with module @code{sigpipe}:
+Portability problems fixed by Gnulib module @code{stdio} or @code{fprintf-posix} or @code{fprintf-gnu}, together with module @code{sigpipe}:
@itemize
@item
When writing to a pipe with no readers, this function fails, instead of