rustc: leave space for fields of uninhabited types to allow partial initialization.#50622
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bors merged 1 commit intorust-lang:masterfrom May 13, 2018
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(rust_highfive has picked a reviewer for you, use r? to override) |
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@bors r+ -- nominating for beta backport too |
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📌 Commit 9235c9f has been approved by |
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because of #50442 -- or is there a more targeted fix or something? |
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@nikomatsakis A more targeted fix without solving the problem of leaving space for fields, would likely lead to an incorrect optimization, because of the |
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☀️ Test successful - status-appveyor, status-travis |
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[beta] Process backports * #50622: rustc: leave space for fields of uninhabited types to allow partial initialization. * #50643: typeck: Fix ICE with struct update syntax r? @alexcrichton
This was referenced Jun 27, 2018
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Fixes #49298 by only collapsing uninhabited enum variants, and only if they only have ZST fields.
Fixes #50442 incidentally (@nox's optimization didn't take into account uninhabited variants).