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build-fail directive: make explanation more uniform

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The last part of the paragraph did not fit
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Tshepang Mbambo 2025-06-30 06:15:08 +02:00 • committed by GitHub
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6
src/doc/rustc-dev-guide/src/tests/ui.md
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@ -453,9 +453,9 @@ even run the resulting program. Just add one of the following
- `//@ check-fail` — compilation should fail (the codegen phase is skipped).
This is the default for UI tests.
- `//@ build-fail` — compilation should fail during the codegen phase.
This will run `rustc` twice, once to verify that it compiles successfully
without the codegen phase, then a second time the full compile should
fail.
This will run `rustc` twice:
- First time is to ensure that the compile succeeds without the codegen phase
- Second time is to ensure that the full compile fails
- `//@ run-fail` — compilation should succeed, but running the resulting
binary should fail.