Copy named expressions.
Since expressions can be modified, making DAGs this early causes corruption of the expression tree.
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@ -121,7 +121,7 @@ convert_name (expr_t *e)
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return;
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}
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if (sym->sy_type == sy_expr) {
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new = sym->s.expr;
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new = copy_expr (sym->s.expr);
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goto convert;
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}
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if (sym->sy_type == sy_type)
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