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Paul Eggert authored
This fixes a performance regression introduced by the recent addition of vcopy. This means 'vcopy' will need to be modified for a copying collector, but that's OK. Also, tighten the checking in the assertion.
1b9d9d16
This fixes a performance regression introduced by the recent addition of vcopy. This means 'vcopy' will need to be modified for a copying collector, but that's OK. Also, tighten the checking in the assertion.