getgroups: document portability issues

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

diff --git a/doc/posix-functions/getpwuid_r.texi b/doc/posix-functions/getpwuid_r.texi
index fd92724..367ba92 100644 (file)
--- a/doc/posix-functions/getpwuid_r.texi
+++ b/doc/posix-functions/getpwuid_r.texi
@@ -16,6 +16,9 @@ Solaris 11 2011-11 (when @code{_POSIX_PTHREAD_SEMANTICS} is not defined).
 Portability problems not fixed by Gnulib:
 @itemize
 @item
+This function is unsafe to call between @code{fork} and @code{exec} if
+the parent process is multi-threaded.  Use it prior to forking.
+@item
 This function is missing on some platforms:
 OpenBSD 3.8, Minix 3.1.8, mingw, MSVC 9, BeOS.
 @end itemize