Ensure that the type parameters passed to methods outlive the call expression#18940

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nikomatsakis:issue-18899

Nov 20, 2014

Commits on Nov 19, 2014

Ensure that the type parameters passed to methods outlive the call expression. Fixes #18899.
nikomatsakis
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Update libcollections tests to pass the new type rules. They used to return a pointer to the value they were modifying, but this should not have been legal, since that pointer would have to outlive…
nikomatsakis
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