x/tools/gopls: unrecovered panic when type checking

[crabxyj]

gopls version: v0.8.2 (go1.17)
gopls flags:
update flags: proxy
extension version: 0.32.0
go version: 1.17
environment: Visual Studio Code win32
initialization error: undefined
issue timestamp: Wed, 06 Apr 2022 02:57:47 GMT
restart history:
Wed, 06 Apr 2022 02:57:30 GMT: activation (enabled: true)

ATTENTION: PLEASE PROVIDE THE DETAILS REQUESTED BELOW.

Describe what you observed.

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0xad4900]

goroutine 420 [running]:
go/types.(*Checker).handleBailout(0xc0050f2f00, 0xc00621f660)
	C:/Program   check.go:245  0x8b
panic({0x1246200, 0x1a9dbe0})
	C:/Program   panic.go:1038  0x215
go/ast.(*Ident).Pos(0xc00621edf0)
	C:/Program   ast.go:469
go/types.spanOf({0x1554380, 0x0})
	C:/Program   errors.go:243  0x134
go/types.(*Checker).newError(0xc0050f2f00, {0x1554380, 0x0}, 0x27, 0x0, {0xc008d17380, 0x33})
	C:/Program   errors.go:154  0x4f
go/types.(*Checker).error(0xc00c15e5a0, {0x1554380, 0x0}, 0x0, {0xc008d17380, 0x36})
	C:/Program   errors.go:173  0x35
go/types.(*Checker).errorf(0xc0050f2f00, {0x1554380, 0x0}, 0xc005a31fc1, {0x136f5c5, 0xc005f5f3c0}, {0x0, 0x0, 0x0})
	C:/Program   errors.go:177  0x68
go/types.(*Checker).collectObjects.func1({0x15559e0, 0xc0005ffe00})
	C:/Program   resolver.go:279  0xbfd
go/types.(*Checker).walkDecl(0x800000000000, {0x1568820, 0xc000a9d500}, 0xc007c07530)
	C:/Program   decl.go:431  0x1c7
go/types.(*Checker).walkDecls(0xc005f5f3c0, {0xc000a9d800, 0x4, 0x1}, 0x0)
	C:/Program   decl.go:418  0x6a
go/types.(*Checker).collectObjects(0xc0050f2f00)
	C:/Program   resolver.go:252  0x225
go/types.(*Checker).checkFiles(0xc0050f2f00, {0xc0051413f0, 0xc0006e0b40, 0x0})
	C:/Program   check.go:263  0xb5
go/types.(*Checker).Files(...)
	C:/Program   check.go:250
golang.org/x/tools/internal/lsp/cache.doTypeCheck({0x156b3d8, 0xc0008030c0}, 0xc000364120, 0xc001c84960, 0x2, 0xc0021f35f0, 0xc000068460)
	  check.go:551  0x953
golang.org/x/tools/internal/lsp/cache.typeCheck({0x156b3d8, 0xc0008030c0}, 0xc000364120, 0xc001c84960, 0x2, 0x0)
	  check.go:317  0xe5
golang.org/x/tools/internal/lsp/cache.(*snapshot).buildPackageHandle.func1({0x156b3d8, 0xc0008030c0}, {0x15549a0, 0xc000364120})
	  check.go:125  0x23e
golang.org/x/tools/internal/memoize.(*Handle).run.func1()
	  memoize.go:327  0xa9
created by golang.org/x/tools/internal/memoize.(*Handle).run
	  memoize.go:320  0x1b0
[Error - 10:57:43] 

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[suzmue]

@crabxyj Thanks for filing an issue! Could you provide any more information about the code you were editing and what you were trying to do when this crash occurred?

[findleyr]

This is a dupe of https://go.dev/issue/48082, and was fixed in go1.17.1. Could you please update your version of Go? Thanks.