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Rollup merge of #119816 - oli-obk:tait_ice_unify_obligations, r=lcnr

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Define hidden types in confirmation

fixes  #111470

r? `@lcnr` or `@compiler-errors`

explanation in the newly added test
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Matthias Krüger 2024-01-16 17:55:22 +01:00 • committed by GitHub
commit d4b276caa4
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2 changed files with 29 additions and 1 deletions
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compiler/rustc_trait_selection/src/traits/project.rs
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@ -2466,7 +2466,7 @@ fn confirm_param_env_candidate<'cx, 'tcx>(
debug!(?cache_projection, ?obligation_projection);
match infcx.at(cause, param_env).eq(
DefineOpaqueTypes::No,
DefineOpaqueTypes::Yes,
cache_projection,
obligation_projection,
) {