cmd/compile: internal compiler error: usefield without paramfld

[dvyukov]

$ export GOEXPERIMENT=fieldtrack
$ ./make.bash
$ go build -race test.go

results in:

test.go:10: internal compiler error: usefield B F without paramfld

The program is:

package foo

type A struct {
    F int
}

type B A

func (f *B) M() int {
    return A(*f).F
}

go version devel +d7aae33 Mon Aug 17 15:29:23 2015 +0000 linux/amd64

This is a regression from 1.4 and affects our internal race detector usage.

[gopherbot]

CL https://golang.org/cl/13676 mentions this issue.

[gopherbot]

CL https://golang.org/cl/13664 mentions this issue.