rust-lang / rust-lang/rust

run-make tests ignore --test-codegen-backend

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A-compiletest A-run-make A-test-infra C-bug T-bootstrap
Dominant language
Rust
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Description

If I do ./x.py test tests/run-make --test-codegen-backend cranelift, all tests pass, despite the fact that several run-make tests are broken with cg_clif for various reasons.

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Research direction

Start by reproducing ./x.py test tests/run-make --test-codegen-backend cranelift, then trace how the run-make test harness handles --test-codegen-backend. The fix is complete when the selected backend is actually used and broken cg_clif tests no longer pass silently.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers, testing
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
58/100

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