What version of Go are you using (go version)?
go version go1.20.6 darwin/amd64
golang.org/x/tools/gopls v0.12.4
golang.org/x/tools/gopls@(devel)
````
### Does this issue reproduce with the latest release?
yes
### What operating system and processor architecture are you using (`go env`)?
darwin, amd64
### What did you expect to see?
Refactor of code with anonymous struct completes successfully
### What did you see instead?
`parent nil` error while extracting code with anonymous struct
I was able to reproduce the issue in both Neovim and VSCode.
On the demo below, you can see a successful refactor of named struct and then fail on anonymous struct.
https://github.com/golang/go/assets/27726430/f3096917-4158-4bf1-be52-4477863fa454
**Comment From: adonovan**
Thanks for the bug report. I can reproduce it using the testcase below.
It includes a test case for a second bug that was obvious from inspection of the code, which not only doesn't distinguish local vars from field vars, but doesn't distinguish vars from types.
I suspect the fix will be more involved that we have time for at the moment.
$ cat gopls/internal/regtest/marker/testdata/codeaction/extract_issue61496.txt This test verifies extraction of a function whose parameters include anonymous struct types. It is a regression test for issue #61496.
-- go.mod -- module testdata go 1.18
-- a.go -- package testdata
func _() { var x struct { y int } //@ codeaction("refactor.extract", "var", end, anon) println(x.y) //@ loc(end, ")") }
-- @anon/a.go -- xxx
-- @localtype/b.go -- package testdata
func _() { type T int var x T //@ codeaction("refactor.extract", "var", end, anon) println(x.y) //@ loc(end, ")") }
-- @localtype/b.go -- xxx ```
Comment From: gopherbot
Change https://go.dev/cl/689196 mentions this issue: gopls/internal/golang: fix extract on anonymous structs
Comment From: gopherbot
Change https://go.dev/cl/689475 mentions this issue: gopls/internal/test/marker: fix reachable panic("unreachable")