Fix various soundness bugs in HRTB / method resolution#19617

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bors merged 3 commits intorust-lang:masterfrom

nikomatsakis:issue-19261-2

Dec 12, 2014

Commits on Dec 11, 2014

Fix two bugs in HRTB: 1. Categorize early-vs-late bindings on impls when constructing generics, so that we don't add unnecessary region parameters. 2. Correct the DeBruijn indices when substitut…
nikomatsakis
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During method resolution, only reborrow if we are not doing an auto-ref.
nikomatsakis
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Fix an incorrect type annotation (shadowed lifetime parameter) that was masked by
nikomatsakis
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