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Refactor supertrait handling#23026

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bors merged 8 commits intorust-lang:masterrust-lang/rust:masterfrom nikomatsakis:issue-20220-supertraitnikomatsakis/rust:issue-20220-supertraitCopy head branch name to clipboardMar 5, 2015

+822-575

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Commits on Mar 4, 2015

• Simplify impl of Elaborator now that we don't need stack traces anymore.

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• Extract out the filter_to_traits functionality

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• Extend the "treat-err-as-bug" option to cover calls to fatal.

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• Extract out trait_defines_associated_type_named into the AstConv

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• Separate supertrait collection from processing a TraitDef. This allows

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• Generalize the code so we can handle multiple supertraits.

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• Add tests related to rust-lang#20220. Fixes rust-lang#20220.

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Commits on Mar 5, 2015

• Address nits by @nrc.

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