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Rollup merge of #116530 - aliemjay:ice-on-ambiguity, r=compiler-errors
delay a bug when encountering an ambiguity in MIR typeck We shouldn't have any trait selection ambiguities in MIR typeck. See #114586 (comment) r? `@oli-obk` `@compiler-errors` `@lcnr`
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20 changes: 20 additions & 0 deletions
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tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.current.stderr
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error: internal compiler error: no errors encountered even though `delay_span_bug` issued | ||
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error: internal compiler error: ambiguity performing ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing }, value: ProvePredicate { predicate: Binder { value: ProjectionPredicate(AliasTy { args: [FnDef(DefId(get_rpit), []), ()], def_id: DefId(ops::function::FnOnce::Output) }, Term::Ty(Alias(Opaque, AliasTy { args: [], def_id: DefId(Opaque::{opaque#0}) }))), bound_vars: [] } } } | ||
--> $DIR/rpit_tait_equality_in_canonical_query.rs:28:5 | ||
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LL | query(get_rpit); | ||
| ^^^^^^^^^^^^^^^ | ||
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--> $DIR/rpit_tait_equality_in_canonical_query.rs:28:5 | ||
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LL | query(get_rpit); | ||
| ^^^^^^^^^^^^^^^ | ||
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query stack during panic: | ||
end of query stack | ||
error: aborting due to 2 previous errors | ||
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