func (b *builder) refSym(sym *sym8.Symbol, pos *lex8.Pos) { // track file dependencies inside a package if b.deps == nil { return // no need to track deps } symPos := sym.Pos if symPos == nil { return // builtin } if sym.Pkg() != b.path { return // cross package reference } if pos.File == symPos.File { return } b.deps.add(pos.File, symPos.File) }