What steps will reproduce the problem?


1. Have an invalid program (does not compile):
package main // http://play.golang.org/p/s7Xg5T3zf4

func main() {
        _ = []int{}[0:0:] // <- missing mandatory max
}


2. Click the "Format" button.


3. Click the "Run" button


What is the expected output?
prog.go:4: final index required in 3-index slice
 [process exited with non-zero status]


What do you see instead?
[no output]


Which compiler are you using (5g, 6g, 8g, gccgo)?
N/A


Which operating system are you using?
N/A


Which version are you using?  (run 'go version')
N/A


Please provide any additional information below.
The semantics of [l:h] and [l:h:m] differs enough to possibly get any/undefined behavior
from the new "valid" code.