#148 Gentoo QA Notice: "poor programming practices"

When installing libmpeg3 (1.7) on Gentoo (amd64), portage complains about some compiler warnings (gcc 4.3.3):

QA Notice: Package has poor programming practices which may compile fine but exhibit random runtime failures.
ac3.c:24: warning: incompatible implicit declaration of built-in function 'free'
layer3.c:1549: warning: incompatible implicit declaration of built-in function 'free'

Please do not file a Gentoo bug and instead report the above QA issues directly to the upstream developers of this software.

(in libmpeg3-1.8 it is line 1627 of layer3.c)