------- Comment #6 from rguenth at gcc dot gnu dot org 2009-08-08 10:31 ------- The special_function thing is to make us not miss special side-effects of those functions even when we didn't recognize them as builtins. alloca doesn't have one apart from the likeliness to blow up the stack if we do some crazy inlining like into loops.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41001
