Dylan DPC 720b6941df Rollup merge of #78164 - Aaron1011:fix/async-region-name, r=tmandry ... Prefer regions with an `external_name` in `approx_universal_upper_bound` Fixes #75785 When displaying a MIR borrowcheck error, we may need to find an upper bound for a region, which gives us a region to point to in the error message. However, a region might outlive multiple distinct universal regions, in which case the only upper bound is 'static To try to display a meaningful error message, we compute an 'approximate' upper bound by picking one of the universal regions. Currently, we pick the region with the lowest index - however, this caused us to produce a suboptimal error message in issue #75785 This PR `approx_universal_upper_bound` to prefer regions with an `external_name`. This causes us to prefer regions from function arguments/upvars, which seems to lead to a nicer error message in some cases.		2020-12-18 00:30:09 +01:00
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src	Rollup merge of #78164 - Aaron1011:fix/async-region-name, r=tmandry	2020-12-18 00:30:09 +01:00
Cargo.toml	Auto merge of #78399 - vn-ki:gsgdt-graphviz, r=oli-obk	2020-12-15 22:00:02 +00:00