Closed
Description
Reproducer:
const src = `package A
type (
A0 = A
A = A
)
`
func run() error {
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, "test.go", src, parser.SkipObjectResolution)
if err != nil {
return err
}
_, err = (&types.Config{
Error: func(err error) {},
}).Check("test", fset, []*ast.File{f}, &types.Info{})
return err
}$ go run .
panic: t.fromRHS = test.A, typ = invalid type
[recovered]
panic: t.fromRHS = test.A, typ = invalid type
goroutine 1 [running]:
go/types.(*Checker).handleBailout(0xc000007500, 0xc00012be20)
/usr/lib/go/src/go/types/check.go:404 +0x88
panic({0x584240?, 0xc000014210?})
/usr/lib/go/src/runtime/panic.go:785 +0x132
go/types.setDefType(0xc000007500?, {0x5fbce0, 0x6f4720})
/usr/lib/go/src/go/types/typexpr.go:422 +0x294
go/types.(*Checker).typInternal(0xc000007500, {0x5fbff8, 0xc0000780a0}, 0xc00010f3b0)
/usr/lib/go/src/go/types/typexpr.go:267 +0x659
go/types.(*Checker).definedType(0xc000007500, {0x5fbff8, 0xc0000780a0}, 0x6f4720?)
/usr/lib/go/src/go/types/typexpr.go:201 +0x2f
go/types.(*Checker).typeDecl(0xc000007500, 0xc00010f3b0, 0xc000100280, 0x0)
/usr/lib/go/src/go/types/decl.go:610 +0x8cd
go/types.(*Checker).objDecl(0xc000007500, {0x5fe198, 0xc00010f3b0}, 0x0)
/usr/lib/go/src/go/types/decl.go:191 +0xa3f
go/types.(*Checker).packageObjects(0xc000007500)
/usr/lib/go/src/go/types/resolver.go:710 +0x408
go/types.(*Checker).checkFiles(0xc000007500, {0xc000106ef0, 0x1, 0x1})
/usr/lib/go/src/go/types/check.go:459 +0x15a
go/types.(*Checker).Files(0x5b6095?, {0xc000106ef0?, 0xc0000326c0?, 0x0?})
/usr/lib/go/src/go/types/check.go:422 +0x75
go/types.(*Config).Check(0xc00011c0e0, {0x5b6095?, 0x7?}, 0xc000100240, {0xc000106ef0, 0x1, 0x1}, 0xc000032600)
/usr/lib/go/src/go/types/api.go:476 +0x79
main.run()
/tmp/aa/main.go:32 +0xc5
main.main()
/tmp/aa/main.go:12 +0x13
exit status 2