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Use the correct export kind for __rust_alloc_error_handler_should_panic #143260

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@dpaoliello dpaoliello commented Jun 30, 2025 •
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Fixes #143253

__rust_alloc_error_handler_should_panic is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when -Z oom=abort is enabled.

Fix is to export the symbol as data.

r? @bjorn3

@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 Jun 30, 2025
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rustbot commented Jun 30, 2025

Some changes occurred in compiler/rustc_codegen_ssa

cc @WaffleLapkin

@dpaoliello dpaoliello mentioned this pull request Jun 30, 2025
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bjorn3 commented Jul 1, 2025

@bors r+

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bors commented Jul 1, 2025

📌 Commit c073286 has been approved by bjorn3

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 Jul 1, 2025
jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 1, 2025
@jhpratt
Rollup merge of rust-lang#143260 - dpaoliello:arm64eclinkagain, r=bjorn3
932d198 
Use the correct export kind for __rust_alloc_error_handler_should_panic

Fixes rust-lang#143253

`__rust_alloc_error_handler_should_panic` is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when `-Z oom=abort` is enabled.

Fix is to export the symbol as data.

r? `@bjorn3`
@jhpratt jhpratt mentioned this pull request Jul 1, 2025
Closed
bors added a commit that referenced this pull request Jul 2, 2025
@bors
Auto merge of #143305 - jhpratt:rollup-t7e7uhj, r=jhpratt
5264bc9 
Rollup of 12 pull requests

Successful merges:

 - #141829 (Specialize sleep_until implementation for unix (except mac))
 - #141847 (Explain `TOCTOU` on the top of `std::fs`, and reference it in functions)
 - #142138 (Add `Vec::into_chunks`)
 - #142321 (Expose elf abi on ppc64 targets)
 - #142568 (Use the .drectve section for exporting symbols from dlls on Windows)
 - #142886 (ci: aarch64-gnu: Stop skipping `panic_abort_doc_tests`)
 - #143038 (avoid suggesting traits from private dependencies)
 - #143194 (fix bitcast of single-element SIMD vectors)
 - #143206 (Align attr fixes)
 - #143258 (Don't recompute `DisambiguatorState` for every RPITIT in trait definition)
 - #143260 (Use the correct export kind for __rust_alloc_error_handler_should_panic)
 - #143274 (ci: support optional jobs)

r? `@ghost`
`@rustbot` modify labels: rollup
jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 2, 2025
@jhpratt
Rollup merge of rust-lang#143260 - dpaoliello:arm64eclinkagain, r=bjorn3
17cc26e 
Use the correct export kind for __rust_alloc_error_handler_should_panic

Fixes rust-lang#143253

`__rust_alloc_error_handler_should_panic` is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when `-Z oom=abort` is enabled.

Fix is to export the symbol as data.

r? ``@bjorn3``
@jhpratt jhpratt mentioned this pull request Jul 2, 2025
Closed
bors added a commit that referenced this pull request Jul 2, 2025
@bors
Auto merge of #143311 - jhpratt:rollup-vjx4zoy, r=jhpratt
77b41b0 
Rollup of 11 pull requests

Successful merges:

 - #141829 (Specialize sleep_until implementation for unix (except mac))
 - #141847 (Explain `TOCTOU` on the top of `std::fs`, and reference it in functions)
 - #142138 (Add `Vec::into_chunks`)
 - #142321 (Expose elf abi on ppc64 targets)
 - #142886 (ci: aarch64-gnu: Stop skipping `panic_abort_doc_tests`)
 - #143038 (avoid suggesting traits from private dependencies)
 - #143194 (fix bitcast of single-element SIMD vectors)
 - #143206 (Align attr fixes)
 - #143258 (Don't recompute `DisambiguatorState` for every RPITIT in trait definition)
 - #143260 (Use the correct export kind for __rust_alloc_error_handler_should_panic)
 - #143274 (ci: support optional jobs)

r? `@ghost`
`@rustbot` modify labels: rollup
jhpratt added a commit to jhpratt/rust that referenced this pull request Jul 2, 2025
@jhpratt
Rollup merge of rust-lang#143260 - dpaoliello:arm64eclinkagain, r=bjorn3
aeffc8e 
Use the correct export kind for __rust_alloc_error_handler_should_panic

Fixes rust-lang#143253

`__rust_alloc_error_handler_should_panic` is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when `-Z oom=abort` is enabled.

Fix is to export the symbol as data.

r? ```@bjorn3```
@jhpratt jhpratt mentioned this pull request Jul 2, 2025
Closed
bors added a commit that referenced this pull request Jul 2, 2025
@bors
Auto merge of #143313 - jhpratt:rollup-55h4nj0, r=jhpratt
4d9342a 
Rollup of 12 pull requests

Successful merges:

 - #141847 (Explain `TOCTOU` on the top of `std::fs`, and reference it in functions)
 - #142138 (Add `Vec::into_chunks`)
 - #142321 (Expose elf abi on ppc64 targets)
 - #142886 (ci: aarch64-gnu: Stop skipping `panic_abort_doc_tests`)
 - #143038 (avoid suggesting traits from private dependencies)
 - #143194 (fix bitcast of single-element SIMD vectors)
 - #143206 (Align attr fixes)
 - #143231 (Suggest use another lifetime specifier instead of underscore lifetime)
 - #143232 ([COMPILETEST-UNTANGLE 3/N] Use "directives" consistently within compiletest)
 - #143258 (Don't recompute `DisambiguatorState` for every RPITIT in trait definition)
 - #143260 (Use the correct export kind for __rust_alloc_error_handler_should_panic)
 - #143274 (ci: support optional jobs)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jul 2, 2025
@matthiaskrgr
Rollup merge of rust-lang#143260 - dpaoliello:arm64eclinkagain, r=bjorn3
5719019 
Use the correct export kind for __rust_alloc_error_handler_should_panic

Fixes rust-lang#143253

`__rust_alloc_error_handler_should_panic` is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when `-Z oom=abort` is enabled.

Fix is to export the symbol as data.

r? ````@bjorn3````
@matthiaskrgr matthiaskrgr mentioned this pull request Jul 2, 2025
Closed
bors added a commit that referenced this pull request Jul 2, 2025
@bors
Auto merge of #143317 - matthiaskrgr:rollup-isq1wbb, r=matthiaskrgr
28c341e 
Rollup of 11 pull requests

Successful merges:

 - #141847 (Explain `TOCTOU` on the top of `std::fs`, and reference it in functions)
 - #142138 (Add `Vec::into_chunks`)
 - #142321 (Expose elf abi on ppc64 targets)
 - #142886 (ci: aarch64-gnu: Stop skipping `panic_abort_doc_tests`)
 - #143038 (avoid suggesting traits from private dependencies)
 - #143194 (fix bitcast of single-element SIMD vectors)
 - #143231 (Suggest use another lifetime specifier instead of underscore lifetime)
 - #143232 ([COMPILETEST-UNTANGLE 3/N] Use "directives" consistently within compiletest)
 - #143258 (Don't recompute `DisambiguatorState` for every RPITIT in trait definition)
 - #143260 (Use the correct export kind for __rust_alloc_error_handler_should_panic)
 - #143274 (ci: support optional jobs)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Jul 2, 2025
@matthiaskrgr
Rollup merge of rust-lang#143260 - dpaoliello:arm64eclinkagain, r=bjorn3
d7fbef4 
Use the correct export kind for __rust_alloc_error_handler_should_panic

Fixes rust-lang#143253

`__rust_alloc_error_handler_should_panic` is a static but was being exported as a function.

For most targets this doesn't matter, but Arm64EC Windows uses different decorations for exported variables vs functions, hence it fails to link when `-Z oom=abort` is enabled.

Fix is to export the symbol as data.

r? `````@bjorn3`````
@matthiaskrgr matthiaskrgr mentioned this pull request Jul 2, 2025
Closed
bors added a commit that referenced this pull request Jul 2, 2025
@bors
Auto merge of #143322 - matthiaskrgr:rollup-h6xw7i5, r=matthiaskrgr
58dd450 
Rollup of 10 pull requests

Successful merges:

 - #141847 (Explain `TOCTOU` on the top of `std::fs`, and reference it in functions)
 - #142138 (Add `Vec::into_chunks`)
 - #142321 (Expose elf abi on ppc64 targets)
 - #142886 (ci: aarch64-gnu: Stop skipping `panic_abort_doc_tests`)
 - #143194 (fix bitcast of single-element SIMD vectors)
 - #143231 (Suggest use another lifetime specifier instead of underscore lifetime)
 - #143232 ([COMPILETEST-UNTANGLE 3/N] Use "directives" consistently within compiletest)
 - #143258 (Don't recompute `DisambiguatorState` for every RPITIT in trait definition)
 - #143260 (Use the correct export kind for __rust_alloc_error_handler_should_panic)
 - #143274 (ci: support optional jobs)

r? `@ghost`
`@rustbot` modify labels: rollup
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@bors r-
#143322 (comment)

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Jul 2, 2025
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I'm going to switch approaches and convert __rust_alloc_error_handler_should_panic to be a function instead.

@dpaoliello dpaoliello closed this Jul 2, 2025
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Linking broken on arm64ec due to __rust_alloc_error_handler_should_panic symbol
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