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ensure that statics are inhabited #78324

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merged 3 commits into from
Oct 26, 2020
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Fixes #74840

r? @oli-obk

Co-authored-by: BlackHoleFox <[email protected]>
extern {
static VOID: Void; //~ ERROR static of uninhabited type
//~| WARN: previously accepted
static NEVER: !; //~ ERROR static of uninhabited type
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does the diagnostic for a regular static NEVER: ! = panic!(); change with this PR?

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Yes, looks like it does (see the test change I just pushed)... would you prefer it to only apply to foreign items?

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No, having tests for it is good, I'm mostly suprised we don't have any other tests for this

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oli-obk commented Oct 25, 2020

@bors r+

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bors commented Oct 25, 2020

📌 Commit 3bd5cc9 has been approved by oli-obk

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 25, 2020
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Oct 25, 2020
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Oct 25, 2020
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bors commented Oct 26, 2020

⌛ Testing commit 3bd5cc9 with merge b9a94c9...

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bors commented Oct 26, 2020

☀️ Test successful - checks-actions
Approved by: oli-obk
Pushing b9a94c9 to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Oct 26, 2020
@bors bors merged commit b9a94c9 into rust-lang:master Oct 26, 2020
@rustbot rustbot added this to the 1.49.0 milestone Oct 26, 2020
@RalfJung RalfJung deleted the uninhabited-statics branch October 26, 2020 11:44
@hellow554 hellow554 mentioned this pull request Jan 14, 2021
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Creating a raw reference/pointer to an extern never value claims following code is unreachable
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