go version devel +4a839bf01b58 Tue May 20 15:52:08 2014 +1000 linux/amd64

The program is:

package main
func main() {
    var f func()
    go f()
    select{}
}

Currently it crashes with:

        fatal error: unexpected signal during runtime execution
        [signal 0xb code=0x1 addr=0x0 pc=0x417e77]
        
        goroutine 16 [running]:
        runtime.throw(0x4561c5)
            src/pkg/runtime/panic.c:520 +0x69 fp=0x7ff05514de78
        runtime.sigpanic()
            src/pkg/runtime/os_linux.c:222 +0x3d fp=0x7ff05514de90
        runtime.gostartcallfn(0xc2080025c8, 0x0)
            src/pkg/runtime/stack.c:847 +0x27 fp=0x7ff05514deb0
        runtime.newproc1(0x0, 0x7ff05514df38, 0x0, 0x400c38)
            src/pkg/runtime/proc.c:1852 +0x137 fp=0x7ff05514def0
        runtime.newproc(0x0, 0x0)
            src/pkg/runtime/proc.c:1803 +0x53 fp=0x7ff05514df28
        main.main()
            /tmp/go-build923308582/main.go:9 +0x38 fp=0x7ff05514df50
        runtime.main()
            src/pkg/runtime/proc.c:247 +0x11a fp=0x7ff05514dfa8

This happens because runtime.gostartcallfn dereferences nil with m->locks>0.
This causes unrecoverable fatal error. The program must panic instead.