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internal/walk: update comment for previous refactor

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Makdon 2021-04-07 23:22:59 +08:00 committed by GitHub
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commit eec9c2328d
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4
src/cmd/compile/internal/walk/range.go
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@ -168,7 +168,9 @@ func walkRange(nrange *ir.RangeStmt) ir.Node {
hit := nrange.Prealloc
th := hit.Type()
keysym := th.Field(0).Sym // depends on layout of iterator struct. See reflect.go:MapIterType
// depends on layout of iterator struct.
// See cmd/compile/internal/reflectdata/reflect.go:MapIterType
keysym := th.Field(0).Sym
elemsym := th.Field(1).Sym // ditto
fn := typecheck.LookupRuntime("mapiterinit")