Dylan DPC 505846ec07
Rollup merge of #83476 - mystor:rc_mutate_strong_count, r=m-ou-se
Add strong_count mutation methods to Rc

The corresponding methods were stabilized on `Arc` in #79285 (tracking: #71983). This patch implements and stabilizes identical methods on the `Rc` types as well.
2021-04-07 13:07:06 +02:00
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