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Rollup merge of #97743 - RalfJung:const-err-future-breakage, r=estebank

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make const_err show up in future breakage reports

As tracked in https://github.com/rust-lang/rust/issues/71800, const_err should become a hard error Any Day Now (TM). I'd love to move forward with that sooner rather than later; it has been deny-by-default for many years and a future incompat lint since https://github.com/rust-lang/rust/pull/80394 (landed more than a year ago). Some CTFE errors are already hard errors since https://github.com/rust-lang/rust/pull/86194. But before we truly make it a hard error in all cases, we now have one more intermediate step we can take -- to make it show up in future breakage reports.

Cc `````@rust-lang/wg-const-eval`````
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Matthias Krüger 2022-06-26 19:47:01 +02:00 • committed by GitHub
commit 7312a66a5c
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compiler/rustc_lint_defs/src/builtin.rs
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@ -289,6 +289,7 @@ declare_lint! {
"constant evaluation encountered erroneous expression",
@future_incompatible = FutureIncompatibleInfo {
reference: "issue #71800 <https://github.com/rust-lang/rust/issues/71800>",
reason: FutureIncompatibilityReason::FutureReleaseErrorReportNow,
};
report_in_external_macro
}