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const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology #143092
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RalfJung
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Jun 27, 2025
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@bors r+ rollup |
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Some changes occurred to constck cc @fee1-dead Some changes occurred to the CTFE machinery |
How about this? |
Ah yea moving the teach note to a regular note works. This is a fairly rare diagnostic, so being more explicit immediately is good @bors r+ rollup |
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@bors r=oli-obk |
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… r=oli-obk const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology This error recently got changed in rust-lang#140942 to use the terminology of "top-level scope", but after further discussion in rust-lang/reference#1865 it seems the reference will not be using that terminology after all. So let's also remove it from the compiler again, and let's focus on what actually happens with these temporaries: their lifetime is extended until the end of the program. r? `@oli-obk` `@traviscross`
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…rors Rollup of 8 pull requests Successful merges: - #139858 (New const traits syntax) - #140809 (Reduce special casing for the panic runtime) - #142963 (Skip unnecessary components in x64 try builds) - #142974 (Update stage0 to 1.89.0-beta.1) - #142987 (rustdoc: show attributes on enum variants) - #143002 (tests: Require `run-fail` ui tests to have an exit code (`SIGABRT` not ok)) - #143092 (const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology) - #143096 (tag_for_variant: properly pass TypingEnv) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 9 pull requests Successful merges: - #139858 (New const traits syntax) - #140809 (Reduce special casing for the panic runtime) - #142730 (suggest declaring modules when file found but module not defined) - #142806 (Normalize before computing ConstArgHasType goal in new solver) - #143046 (const validation: properly ignore zero-sized UnsafeCell) - #143092 (const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology) - #143096 (tag_for_variant: properly pass TypingEnv) - #143104 (hir_analysis: prohibit `dyn PointeeSized`) - #143106 (gce: don't ICE on non-local const) Failed merges: - #143036 (Remove support for `dyn*` from the compiler) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of #143092 - RalfJung:const-check-lifetime-ext, r=oli-obk const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology This error recently got changed in #140942 to use the terminology of "top-level scope", but after further discussion in rust-lang/reference#1865 it seems the reference will not be using that terminology after all. So let's also remove it from the compiler again, and let's focus on what actually happens with these temporaries: their lifetime is extended until the end of the program. r? ``@oli-obk`` ``@traviscross``
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Rollup of 9 pull requests Successful merges: - rust-lang/rust#139858 (New const traits syntax) - rust-lang/rust#140809 (Reduce special casing for the panic runtime) - rust-lang/rust#142730 (suggest declaring modules when file found but module not defined) - rust-lang/rust#142806 (Normalize before computing ConstArgHasType goal in new solver) - rust-lang/rust#143046 (const validation: properly ignore zero-sized UnsafeCell) - rust-lang/rust#143092 (const checks for lifetime-extended temporaries: avoid 'top-level scope' terminology) - rust-lang/rust#143096 (tag_for_variant: properly pass TypingEnv) - rust-lang/rust#143104 (hir_analysis: prohibit `dyn PointeeSized`) - rust-lang/rust#143106 (gce: don't ICE on non-local const) Failed merges: - rust-lang/rust#143036 (Remove support for `dyn*` from the compiler) r? `@ghost` `@rustbot` modify labels: rollup
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This error recently got changed in #140942 to use the terminology of "top-level scope", but after further discussion in rust-lang/reference#1865 it seems the reference will not be using that terminology after all. So let's also remove it from the compiler again, and let's focus on what actually happens with these temporaries: their lifetime is extended until the end of the program.
r? @oli-obk @traviscross