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Auto merge of #108012 - compiler-errors:issue-107999, r=oli-obk

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Don't ICE in `might_permit_raw_init` if reference is polymorphic

Emitting optimized MIR for a polymorphic function may require computing layout of a type that isn't (yet) known. This happens in the instcombine pass, for example. Let's fail gracefully in that condition.

cc `@saethlin`
fixes #107999
This commit is contained in:
bors 2023-02-15 20:56:07 +00:00
commit c5283576ec
11 changed files with 116 additions and 56 deletions
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8
compiler/rustc_middle/src/query/mod.rs
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@ -2143,12 +2143,12 @@ rustc_queries! {
separate_provide_extern
}
query permits_uninit_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
desc { "checking to see if `{}` permits being left uninit", key.value.ty }
query permits_uninit_init(key: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> Result<bool, ty::layout::LayoutError<'tcx>> {
desc { "checking to see if `{}` permits being left uninit", key.value }
}
query permits_zero_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
desc { "checking to see if `{}` permits being left zeroed", key.value.ty }
query permits_zero_init(key: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> Result<bool, ty::layout::LayoutError<'tcx>> {
desc { "checking to see if `{}` permits being left zeroed", key.value }
}
query compare_impl_const(