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-rw-r--r--doc/posix-functions/vsprintf.texi11
1 files changed, 9 insertions, 2 deletions
diff --git a/doc/posix-functions/vsprintf.texi b/doc/posix-functions/vsprintf.texi
index 27ec5b9141..5ae3644e00 100644
--- a/doc/posix-functions/vsprintf.texi
+++ b/doc/posix-functions/vsprintf.texi
@@ -4,9 +4,9 @@
POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/vsprintf.html}
-Gnulib module: vsprintf-posix
+Gnulib module: vsprintf-posix or vsprintf-gnu
-Portability problems fixed by Gnulib:
+Portability problems fixed by either Gnulib module @code{vsprintf-posix} or @code{vsprintf-gnu}:
@itemize
@item
This function does not support size specifiers as in C99 (@code{hh}, @code{ll},
@@ -80,6 +80,13 @@ The compiler warns that this function is deprecated:
macOS 13.0.
@end itemize
+Portability problems fixed by Gnulib module @code{vsprintf-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 not fixed by Gnulib:
@itemize
@item