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Don't access a static just for its size and alignment #62982

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merged 7 commits into from
Jul 27, 2019
Merged

Don't access a static just for its size and alignment #62982

merged 7 commits into from
Jul 27, 2019

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oli-obk
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@oli-obk oli-obk commented Jul 25, 2019

cc @RalfJung

fixes #62189

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r? @estebank

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 25, 2019
@oli-obk oli-obk added the beta-nominated Nominated for backporting to the compiler in the beta channel. label Jul 25, 2019
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r? @RalfJung

@rust-highfive rust-highfive assigned RalfJung and unassigned estebank Jul 26, 2019
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RalfJung approved these changes Jul 26, 2019
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r=me with these nits fixed and CI green

src/librustc_mir/interpret/memory.rs Outdated Show resolved Hide resolved
src/librustc_mir/interpret/memory.rs Outdated Show resolved Hide resolved
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@bors r+

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bors commented Jul 27, 2019

📌 Commit 0cd7167 has been approved by RalfJung

@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 Jul 27, 2019
Centril added a commit to Centril/rust that referenced this pull request Jul 27, 2019
@Centril
Rollup merge of rust-lang#62982 - oli-obk:static_cycle, r=RalfJung
b25d74f 
Don't access a static just for its size and alignment

cc @RalfJung

fixes rust-lang#62189
@Centril Centril mentioned this pull request Jul 27, 2019
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bors added a commit that referenced this pull request Jul 27, 2019
@bors
Auto merge of #63043 - Centril:rollup-f4baee4, r=Centril
a5e7bb3 
Rollup of 6 pull requests

Successful merges:

 - #62423 (Fix cycle error with existential types)
 - #62979 (Cleanup save-analysis JsonDumper)
 - #62982 (Don't access a static just for its size and alignment)
 - #63013 (add `repr(transparent)` to `IoSliceMut` where missing)
 - #63014 (Stop bare trait lint applying to macro call sites)
 - #63036 (Add lib section to rustc_lexer's Cargo.toml)

Failed merges:

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@RalfJung RalfJung mentioned this pull request Jul 28, 2019
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src/librustc_mir/interpret/memory.rs
return Ok((Size::from_bytes(alloc.bytes.len() as u64), alloc.align));
}
// Function pointers.
if let Ok(_) = self.get_fn_alloc(id) {
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Ah, this is the bug that I missed. We no longer check the "machine" function pointers.

@RalfJung RalfJung mentioned this pull request Jul 28, 2019
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Centril added a commit to Centril/rust that referenced this pull request Jul 29, 2019
@Centril
Rollup merge of rust-lang#63076 - RalfJung:miri-fn-ptr-alloc-size, r=…
5922a19 
…oli-obk

Miri: fix determining size of an "extra function" allocation

Fixes [a bug](rust-lang/miri#862) introduced by rust-lang#62982. Best reviewed commit-by-commit.

r? @oli-obk
@pietroalbini pietroalbini added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 3, 2019
@nagisa nagisa added the beta-accepted Accepted for backporting to the compiler in the beta channel. label Aug 8, 2019
@pietroalbini pietroalbini added beta-accepted Accepted for backporting to the compiler in the beta channel. beta-nominated Nominated for backporting to the compiler in the beta channel. and removed beta-accepted Accepted for backporting to the compiler in the beta channel. beta-nominated Nominated for backporting to the compiler in the beta channel. labels Aug 12, 2019
@Mark-Simulacrum Mark-Simulacrum mentioned this pull request Aug 12, 2019
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bors added a commit that referenced this pull request Aug 13, 2019
@bors
Auto merge of #63498 - Mark-Simulacrum:stable-next, r=Mark-Simulacrum
2fa8790 
1.37.0 stable

This promotes beta to stable and backports a few PRs:

 - Avoid ICE when referencing desugared local binding in borrow error (#63051)
 - Don't access a static just for its size and alignment (#62982) via 331e09b143aebfcf82dc1f9b69b31ee0083cbf0b
bors added a commit that referenced this pull request Aug 13, 2019
@bors
Auto merge of #63498 - Mark-Simulacrum:stable-next, r=Mark-Simulacrum
eae3437 
1.37.0 stable

This promotes beta to stable and backports a few PRs:

 - Avoid ICE when referencing desugared local binding in borrow error (#63051)
 - Don't access a static just for its size and alignment (#62982) via 331e09b143aebfcf82dc1f9b69b31ee0083cbf0b
Centril added a commit to Centril/rust that referenced this pull request Aug 14, 2019
@Centril
Rollup merge of rust-lang#63075 - RalfJung:deref-checks, r=oli-obk
2697a29 
Miri: Check that a ptr is aligned and inbounds already when evaluating `*`

This syncs Miri with what the Nomicon and the Reference say, and resolves rust-lang/miri#447.

Also this would not have worked without rust-lang#62982 due to new cycles. ;)

r? @oli-obk
Centril added a commit to Centril/rust that referenced this pull request Aug 14, 2019
@Centril
Rollup merge of rust-lang#63075 - RalfJung:deref-checks, r=oli-obk
8d6c4b5 
Miri: Check that a ptr is aligned and inbounds already when evaluating `*`

This syncs Miri with what the Nomicon and the Reference say, and resolves rust-lang/miri#447.

Also this would not have worked without rust-lang#62982 due to new cycles. ;)

r? @oli-obk
Centril added a commit to Centril/rust that referenced this pull request Aug 14, 2019
@Centril
Rollup merge of rust-lang#63075 - RalfJung:deref-checks, r=oli-obk
34dea10 
Miri: Check that a ptr is aligned and inbounds already when evaluating `*`

This syncs Miri with what the Nomicon and the Reference say, and resolves rust-lang/miri#447.

Also this would not have worked without rust-lang#62982 due to new cycles. ;)

r? @oli-obk
Centril added a commit to Centril/rust that referenced this pull request Aug 14, 2019
@Centril
Rollup merge of rust-lang#63075 - RalfJung:deref-checks, r=oli-obk
95894cb 
Miri: Check that a ptr is aligned and inbounds already when evaluating `*`

This syncs Miri with what the Nomicon and the Reference say, and resolves rust-lang/miri#447.

Also this would not have worked without rust-lang#62982 due to new cycles. ;)

r? @oli-obk
Centril added a commit to Centril/rust that referenced this pull request Aug 14, 2019
@Centril
Rollup merge of rust-lang#63075 - RalfJung:deref-checks, r=oli-obk
c358476 
Miri: Check that a ptr is aligned and inbounds already when evaluating `*`

This syncs Miri with what the Nomicon and the Reference say, and resolves rust-lang/miri#447.

Also this would not have worked without rust-lang#62982 due to new cycles. ;)

r? @oli-obk
@pietroalbini pietroalbini removed the beta-accepted Accepted for backporting to the compiler in the beta channel. label Aug 21, 2019
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Reviewed by the compiler team:

Accepted for beta backport

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Didn't this land before the current beta branched?

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I'm going to remove the beta nominated label. It seems like it either landed or got rolle up or something.

@nikomatsakis nikomatsakis removed the beta-nominated Nominated for backporting to the compiler in the beta channel. label Aug 29, 2019
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I also last-minute backported it to stable. Maybe that's where the confusion comes from.

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This indeed made it into (current) beta I believe as part of a5e7bb3.

@lqd lqd mentioned this pull request Oct 25, 2019
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@ecstatic-morse ecstatic-morse mentioned this pull request Apr 13, 2020
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@RalfJung RalfJung RalfJung approved these changes

@estebank estebank estebank approved these changes

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Static cyclic references not compiled in current nightly rust version
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@oli-obk @rust-highfive @estebank @RalfJung @bors @nikomatsakis @Mark-Simulacrum @nagisa @pietroalbini