Fixed a problem with promotion of signatures that caused segfaults
Fixed a problem with promotion of signatures that caused segfaults

nemerle/boomerang,xujun10110/boomerang,TambourineReindeer/boomerang,nemerle/boomerang,TambourineReindeer/boomerang,TambourineReindeer/boomerang,TambourineReindeer/boomerang,xujun10110/boomerang,xujun10110/boomerang,xujun10110/boomerang,nemerle/boomerang,xujun10110/boomerang,TambourineReindeer/boomerang,TambourineReindeer/boomerang,TambourineReindeer/boomerang,nemerle/boomerang,TambourineReindeer/boomerang,nemerle/boomerang,nemerle/boomerang,nemerle/boomerang,nemerle/boomerang,xujun10110/boomerang,xujun10110/boomerang,xujun10110/boomerang