[Bug c/49243] attribute((returns_twice)) doesn't work

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49243

--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2011-05-31 
16:22:43 UTC ---
Created attachment 24404
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24404
test case