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Don't use outlives type op outside of MIR typeck

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This commit is contained in:
Michael Goulet 2023-05-25 19:46:52 +00:00
parent d7a2fdd4db
commit c4e8a86d9e
1 changed files with 23 additions and 14 deletions
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37
compiler/rustc_trait_selection/src/traits/outlives_bounds.rs
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@ -1,9 +1,9 @@
use crate::infer::InferCtxt;
use crate::traits::query::type_op::{self, TypeOp, TypeOpOutput};
use crate::traits::{ObligationCause, ObligationCtxt};
use rustc_data_structures::fx::FxIndexSet;
use rustc_errors::ErrorGuaranteed;
use rustc_infer::infer::resolve::OpportunisticRegionResolver;
use rustc_infer::infer::InferOk;
use rustc_middle::infer::canonical::{OriginalQueryValues, QueryRegionConstraints};
use rustc_middle::ty::{self, ParamEnv, Ty, TypeFolder, TypeVisitableExt};
use rustc_span::def_id::LocalDefId;
@ -68,20 +68,29 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> {
return vec![];
}
let span = self.tcx.def_span(body_id);
let result: Result<_, ErrorGuaranteed> = param_env
.and(type_op::implied_outlives_bounds::ImpliedOutlivesBounds { ty })
.fully_perform(self, span);
let result = match result {
Ok(r) => r,
Err(_) => {
return vec![];
}
let mut canonical_var_values = OriginalQueryValues::default();
let canonical_ty =
self.canonicalize_query_keep_static(param_env.and(ty), &mut canonical_var_values);
let Ok(canonical_result) = self.tcx.implied_outlives_bounds(canonical_ty) else {
return vec![];
};
let TypeOpOutput { output, constraints, .. } = result;
let mut constraints = QueryRegionConstraints::default();
let Ok(InferOk { value, obligations }) = self
.instantiate_nll_query_response_and_region_obligations(
&ObligationCause::dummy(),
param_env,
&canonical_var_values,
canonical_result,
&mut constraints,
) else {
return vec![];
};
assert_eq!(&obligations, &[]);
if !constraints.is_empty() {
let span = self.tcx.def_span(body_id);
if let Some(constraints) = constraints {
debug!(?constraints);
if !constraints.member_constraints.is_empty() {
span_bug!(span, "{:#?}", constraints.member_constraints);
@ -108,7 +117,7 @@ impl<'a, 'tcx: 'a> InferCtxtExt<'a, 'tcx> for InferCtxt<'tcx> {
}
};
output
value
}
fn implied_bounds_tys(