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Rollup merge of #136559 - compiler-errors:resolve-regions-for-type-test-failure, r=BoxyUwU

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Resolve named regions when reporting type test failures in NLL

Just a improvement tweak to an error message that I broke out of a bigger PR that I had to close lol
This commit is contained in:
Jacob Pratt 2025-02-13 03:53:29 -05:00 • committed by GitHub
commit 4e6605fb0d
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5 changed files with 38 additions and 19 deletions
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7
compiler/rustc_borrowck/src/diagnostics/region_errors.rs
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@ -316,13 +316,16 @@ impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> {
let type_test_span = type_test.span;
if let Some(lower_bound_region) = lower_bound_region {
let generic_ty = type_test.generic_kind.to_ty(self.infcx.tcx);
let generic_ty = self.regioncx.name_regions(
self.infcx.tcx,
type_test.generic_kind.to_ty(self.infcx.tcx),
);
let origin = RelateParamBound(type_test_span, generic_ty, None);
self.buffer_error(self.infcx.err_ctxt().construct_generic_bound_failure(
self.body.source.def_id().expect_local(),
type_test_span,
Some(origin),
type_test.generic_kind,
self.regioncx.name_regions(self.infcx.tcx, type_test.generic_kind),
lower_bound_region,
));
} else {