- exceptional conditions during expression evaluation are undefined - "nil" for interfaces, comparison against "nil"
- exceptional conditions during expression evaluation are undefined
- "nil" for interfaces, comparison against "nil"

R=r
DELTA=38  (24 added, 5 deleted, 9 changed)
OCL=16207
CL=16211
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go