Hi,
How extensively did you test the new seabios changes and are you able to recreate?
Given the small number of changes just a quick smoke test (boot linux guest).
gcc version 4.6.1 (Ubuntu/Linaro 4.6.1-9ubuntu3)
gcc (GCC) 4.4.6 20110731 (Red Hat 4.4.6-3) GNU ld version 2.20.51.0.2-5.28.el6 20091009
Here is the pull location I forgot: git://git.kraxel.org/qemu seabios-1.6.3.2
If that binary works for you your toolchain is broken ;)
cheers, Gerd