-HP-UX 11, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
+HP-UX 11.00, IRIX 5.3, Solaris 2.6, mingw, Interix 3.5.
+@item
+This function clobbers caller-owned registers on some platforms:
+Cygwin 1.7.5.
+@item
+This function does not work on some platforms:
+Solaris 9.