@section @code{towupper}
@findex towupper
-POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/towupper.html}
+POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/towupper.html}
Gnulib module: wctype
@item
This function is missing on some platforms:
IRIX 5.3, Solaris 2.5.1.
+@item
+This function returns values of which the upper 16 bits are incorrect
+on some platforms:
+mingw.
@end itemize
Portability problems not fixed by Gnulib: