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[beta] backports #37549

Merged
merged 10 commits into from
Nov 3, 2016
Merged

[beta] backports #37549

merged 10 commits into from
Nov 3, 2016

Commits on Nov 3, 2016

  1. Add release notes for 1.12.1

    @brson
    brson committed Nov 3, 2016
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  2. add a per-param-env cache to impls_bound 

    There used to be only a global cache, which led to uncached calls to
trait selection when there were type parameters.

I'm running a check that there are no adverse performance effects.

Fixes rust-lang#37106 (drop elaboration times are now ~half of borrow checking,
so might still be worthy of optimization, but not critical).
    @arielb1 @brson
    arielb1 authored and brson committed Nov 3, 2016
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  3. Allow bootstrapping without a key. Fixes rust-lang#36548 

    This will make it easier for packagers to bootstrap rustc when they happen
to have a bootstrap compiler with a slightly different version number.

It's not ok for anything other than the build system to set this environment variable.
    @brson
    brson committed Nov 3, 2016
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  4. Fix label scopes.

    @jseyfried @brson
    jseyfried authored and brson committed Nov 3, 2016
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  5. Do not intern filemap to entry w/ mismatched length. Fix rust-lang#37274 

     (I think).
    @pnkfelix @brson
    pnkfelix authored and brson committed Nov 3, 2016
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  6. normalize trait-ref in context of impl 

    The `specializes()` function was trying to normalize the impl trait in
an empty environment. This could lead to inexplicable failures.
    @nikomatsakis @brson
    nikomatsakis authored and brson committed Nov 3, 2016
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  7. add rust-lang#32791 test case

    @nikomatsakis @brson
    nikomatsakis authored and brson committed Nov 3, 2016
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  8. Fix ICE when attempting to get closure generics.

    @Mark-Simulacrum @brson
    Mark-Simulacrum authored and brson committed Nov 3, 2016
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  9. Fix ICE when printing closures, and other similar types

    @Mark-Simulacrum @brson
    Mark-Simulacrum authored and brson committed Nov 3, 2016
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  10. Bump prerelease version

    @brson
    brson committed Nov 3, 2016
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