don't crash on unsafe.Alignof(struct{x float}{0}.x)
don't crash on
unsafe.Alignof(struct{x float}{0}.x)

R=ken
OCL=26911
CL=26913

sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,Triskite/willstone-goclone,glycerine/jeaten-go-arrayof-structof,rflanagan/reginaldflanagan-project1,rdp/rogerpack2005-golang,rflanagan/reginaldflanagan-project1,scirelli/scirelli-go,webfd/go-zh,d0f/go-zh,scirelli/scirelli-go,mhennings/marcohennings-go,d0f/go-zh,sanjosh/sanjos100-tipc,Triskite/willstone-goclone,npe9/noahevans-go9,Triskite/willstone-goclone,mhennings/marcohennings-go,rdp/rogerpack2005-golang,mhennings/marcohennings-go,webfd/go-zh,bryanxu/go-zh,d0f/go-zh,sanjosh/sanjos100-tipc,npe9/noahevans-go9,d0f/go-zh,bryanxu/go-zh,webfd/go-zh,mhennings/marcohennings-go,scirelli/scirelli-go,npe9/noahevans-go9,npe9/noahevans-go9,scirelli/scirelli-go,npe9/noahevans-go9,webfd/go-zh,rflanagan/reginaldflanagan-project1,bryanxu/go-zh,npe9/noahevans-go9,Triskite/willstone-goclone,webfd/go-zh,glycerine/jeaten-go-arrayof-structof,bryanxu/go-zh,glycerine/jeaten-go-arrayof-structof,sanjosh/sanjos100-tipc,bryanxu/go-zh,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,webfd/go-zh,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,rflanagan/reginaldflanagan-project1,mhennings/marcohennings-go,d0f/go-zh,Triskite/willstone-goclone,bryanxu/go-zh,mhennings/marcohennings-go,d0f/go-zh,webfd/go-zh,mhennings/marcohennings-go,rflanagan/reginaldflanagan-project1,sanjosh/sanjos100-tipc,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,scirelli/scirelli-go,scirelli/scirelli-go,Triskite/willstone-goclone,d0f/go-zh,rflanagan/reginaldflanagan-project1,scirelli/scirelli-go,sanjosh/sanjos100-tipc,scirelli/scirelli-go,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,rflanagan/reginaldflanagan-project1,rdp/rogerpack2005-golang,npe9/noahevans-go9,npe9/noahevans-go9,bryanxu/go-zh,Triskite/willstone-goclone,mhennings/marcohennings-go,rdp/rogerpack2005-golang,rflanagan/reginaldflanagan-project1,glycerine/jeaten-go-arrayof-structof,rdp/rogerpack2005-golang,webfd/go-zh,Triskite/willstone-goclone,bryanxu/go-zh