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Add regression test for nested associated-type projection ICE - #160087

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zakrad:regr-test-109864
Jul 30, 2026
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Add regression test for nested associated-type projection ICE#160087
rust-bors[bot] merged 1 commit into
rust-lang:mainfrom
zakrad:regr-test-109864

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@zakrad zakrad commented Jul 28, 2026

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Closes #109864. Adds a UI regression test

@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 Jul 28, 2026
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rustbot commented Jul 28, 2026

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Thanks for the pull request, and welcome! The Rust Project is excited to review your changes, and you should hear from @oli-obk (or someone else) some time within the next two weeks.

Please see the contribution instructions for more information. Namely, in order to ensure the minimum review times lag, PR authors and assigned reviewers should ensure that the review label (S-waiting-on-review and S-waiting-on-author) stays updated, invoking these commands when appropriate:

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@oli-obk oli-obk Jul 29, 2026

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This issue was an incremental ICE, it only reproduces if incremental is enabled. Please check how other ui tests enable incremental and use that here, too

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Thanks for review, Added //@ incremental so the test runs in incremental mode, now produces the trait-bound errors there instead of crashing.
@rustbot ready

@rustbot rustbot removed the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jul 29, 2026
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Reminder, once the PR becomes ready for a review, use @rustbot ready.

@rustbot rustbot added the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Jul 29, 2026
Deeply nested associated-type projections used to ICE with "type variables
should not be hashed" under incremental compilation; they now produce ordinary
trait-bound errors. Uses `//@ incremental` so the crash path is exercised.
@zakrad
zakrad force-pushed the regr-test-109864 branch from 7f5ed4b to c430395 Compare July 29, 2026 13:02
@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 29, 2026
@zakrad
zakrad requested a review from oli-obk July 29, 2026 14:31

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rust-bors Bot commented Jul 29, 2026

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📌 Commit c430395 has been approved by oli-obk

It is now in the queue for this repository.

@rust-bors rust-bors Bot 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 29, 2026
jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 29, 2026
Add regression test for nested associated-type projection ICE

Closes rust-lang#109864. Adds a UI regression test
rust-bors Bot pushed a commit that referenced this pull request Jul 29, 2026
Rollup of 17 pull requests

Successful merges:

 - #159014 ([rustdoc] Do not take `doc(cfg())` into account when filtering doctests)
 - #159130 (a bit optimize four-digit chunks in integer formatting)
 - #159592 (core: implement bounded random sampling)
 - #159898 (Add intrinsic-test alias and set  sample rate)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 29, 2026
Add regression test for nested associated-type projection ICE

Closes rust-lang#109864. Adds a UI regression test
rust-bors Bot pushed a commit that referenced this pull request Jul 29, 2026
Rollup of 18 pull requests

Successful merges:

 - #159130 (a bit optimize four-digit chunks in integer formatting)
 - #159592 (core: implement bounded random sampling)
 - #159898 (Add intrinsic-test alias and set  sample rate)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
JonathanBrouwer added a commit to JonathanBrouwer/rust that referenced this pull request Jul 29, 2026
Add regression test for nested associated-type projection ICE

Closes rust-lang#109864. Adds a UI regression test
rust-bors Bot pushed a commit that referenced this pull request Jul 29, 2026
…uwer

Rollup of 18 pull requests

Successful merges:

 - #159898 (Add intrinsic-test alias and set  sample rate)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #158693 (Add type-check to offload intrinisc calls)
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #159411 ([rustdoc] Correctly handle output options with --show-coverage)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
rust-bors Bot pushed a commit that referenced this pull request Jul 30, 2026
Rollup of 20 pull requests

Successful merges:

 - #157669 (cfi: add diag mode support)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #158693 (Add type-check to offload intrinisc calls)
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #159411 ([rustdoc] Correctly handle output options with --show-coverage)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160101 (Add missing `needs-unwind` annotation to `add-spawn-hook-reentrancy-159923` test)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
 - #160178 (Remove unused `va_start` intrinsic)
rust-bors Bot pushed a commit that referenced this pull request Jul 30, 2026
Rollup of 20 pull requests

Successful merges:

 - #157669 (cfi: add diag mode support)
 - #158247 (hermit/fs: Return `unsupported()` instead of `from_raw_os_error(22)`)
 - #158649 (Hermit: fix `readdir()` )
 - #158693 (Add type-check to offload intrinisc calls)
 - #159049 (Avoid ICE in From/TryFrom cast suggestion when encountering HRTBs)
 - #159411 ([rustdoc] Correctly handle output options with --show-coverage)
 - #160053 (test: add test suite for the 85681 issue)
 - #160087 (Add regression test for nested associated-type projection ICE)
 - #160090 (rustc_resolve: Further reduce mutability in resolver)
 - #160099 (Resolver: split module resolutions into local and external resolutions)
 - #160101 (Add missing `needs-unwind` annotation to `add-spawn-hook-reentrancy-159923` test)
 - #160106 (Add suggestions for `must_implement_one_of`)
 - #160117 (Remove unnecessary format usage)
 - #160134 (Work around Wine bug 60084 by calling WSAStartup at most once)
 - #160139 (iter: specialize Take::count using advance_by)
 - #160142 (bootstrap: remove use-lld config alias)
 - #160148 (Rename `errors.rs` file to `diagnostics.rs` (15/N))
 - #160151 (Mark a doctest as requiring unwinding)
 - #160166 (Use correct feature gates for `f16`/`f128` `From` impls)
 - #160178 (Remove unused `va_start` intrinsic)
@rust-bors
rust-bors Bot merged commit 246800c into rust-lang:main Jul 30, 2026
13 checks passed
@rustbot rustbot added this to the 1.99.0 milestone Jul 30, 2026
rust-timer added a commit that referenced this pull request Jul 30, 2026
Rollup merge of #160087 - zakrad:regr-test-109864, r=oli-obk

Add regression test for nested associated-type projection ICE

Closes #109864. Adds a UI regression test
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ICE: type variables should not be hashed

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