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@ouz-a ouz-a commented Sep 22, 2023

Weirdly enough this #115998 issue seems to exist since Rust 1.0 (couldn't check before that) but it's only recently been noticed. This change makes those casts illegal.

Fixes #115998

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rustbot commented Sep 22, 2023

r? @petrochenkov

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Sep 22, 2023
},
// array-ptr-cast
Ptr(mt) => {
if !mt.ty.is_sized(fcx.tcx, fcx.param_env) {
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This type may have region variables. That'll cause an ICE. Try using:

Suggested change
if !mt.ty.is_sized(fcx.tcx, fcx.param_env) {
if !fcx.type_is_sized_modulo_regions(fcx.param_env, mt.ty) {

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Thanks! Didn't know this.

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please squash this into one commit

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@bors r+

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bors commented Sep 22, 2023

📌 Commit 861448b has been approved by compiler-errors

It is now in the queue for this repository.

@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 Sep 22, 2023
bors added a commit to rust-lang-ci/rust that referenced this pull request Sep 22, 2023
…iaskrgr

Rollup of 6 pull requests

Successful merges:

 - rust-lang#115770 (Match on elem first while building move paths)
 - rust-lang#115999 (Capture scrutinee of if let guards correctly)
 - rust-lang#116056 (Make unsized casts illegal)
 - rust-lang#116061 (Remove TaKO8Ki from review rotation)
 - rust-lang#116062 (Change `start` to `#[start]` in some diagnosis)
 - rust-lang#116067 (Open the FileEncoder file for reading and writing)

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@bors bors merged commit a38f230 into rust-lang:master Sep 22, 2023
@rustbot rustbot added this to the 1.74.0 milestone Sep 22, 2023
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Sep 22, 2023
Rollup merge of rust-lang#116056 - ouz-a:wide_ice, r=compiler-errors

Make unsized casts illegal

Weirdly enough this rust-lang#115998 issue seems to exist since Rust 1.0 (couldn't check before that) but it's only recently been noticed. This change makes those casts illegal.

Fixes rust-lang#115998
@ouz-a ouz-a deleted the wide_ice branch September 25, 2023 10:51
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ICE due to bad sized to unsized pointer cast in const item
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