[Bug tree-optimization/50188] Optimizer doesn't take into account, that longjmp could lead to loops, which causes illegal code transformations.

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50188

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-08-25 
18:33:44 UTC ---
IIRC the variables need to be marked as volatile if you want them to be correct
over setjmp/longjmp.