Mention platform-dependent limitations of wchar_t.

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

diff --git a/doc/posix-functions/towlower.texi b/doc/posix-functions/towlower.texi
index 6e62c7b..8fd6b62 100644 (file)
--- a/doc/posix-functions/towlower.texi
+++ b/doc/posix-functions/towlower.texi
@@ -15,4 +15,7 @@ Portability problems not fixed by Gnulib:
 @item
 This function is missing on some platforms:
 IRIX 5.3, Solaris 2.5.1.
+@item
+On AIX and Windows platforms, @code{wchar_t} is a 16-bit type and therefore cannot
+accommodate all Unicode characters.
 @end itemize