+@item
+This function is missing on some platforms:
+mingw, BeOS.
+@item
+This function does not allow for a NULL @samp{resolved} parameter on
+some platforms:
+Solaris.
+@item
+This function does not always return an absolute path on some
+platforms:
+Solaris.
+@item
+This function fails to detect trailing slashes on non-directories on
+some platforms:
+glibc 2.3.5.
+@item
+This function fails to recognize non-directories followed @samp{..} on
+some platforms:
+cygwin.