Implement `MaybeUninit` - #53508

Merged

bors merged 19 commits into

rust-lang:masterfrom

japaric:maybe-uninit

Sep 23, 2018

Commits on Sep 22, 2018

add MaybeUninit and deprecate mem::{uninitialized,zeroed}
japaric
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7bb5b3e
core: fix deprecated warnings
japaric
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851acdd
panic when instantiating an uninhabited type via mem::{uninitialized,zeroed}
japaric
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96572cb
alloc: fix deprecated warnings
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7c37c6d
don't deprecate mem::{uninitialized,zeroed} just yet
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ce8503d
adapt to change in Session API
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a6d011a
address Mark-Simulacrum comments
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af101fd
use is_uninhabited in more places
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ce6e6f9
improve panic message
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33c10ea
move our check to reuse a previous computation
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bc5b567
improve the run-pass test
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d864edc
add empty enum to the test cases
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758ce16
address RalfJung's comment
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8fb0e80
gdb_rust_pretty_printing: adapt to the changes in the layout of btree::LeafNode
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8482c93
make the nil-enum test work again
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7fea7f4
fix tidy
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dd9f019
add codegen test
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41b242e
the test requires unwinding so we don't run it on the wasm32-bare target
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d266722
allow dead_code
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1cdbad2