No, it is not fixed in 5.7.63002.  The Pango warning was displayed
when I compiled the class (attached) on Solaris 9 on SPARC using
GTK+2.6.10, but was not displayed on Solaris 10 on x86 using GTK+2.4.

Don't forget to replace all occurrences of NULL with null character
(not %U) in test.e before compiling.