[Bug tree-optimization/49243] attribute((returns_twice)) doesn't work

[mikpe at it dot uu.se]

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

--- Comment #4 from Mikael Pettersson <mikpe at it dot uu.se> 2011-06-02 
15:33:40 UTC ---
Patch posted:
http://gcc.gnu.org/ml/gcc-patches/2011-06/msg00145.html