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Rollup merge of #124057 - gurry:124031-ice-layout-errored, r=compiler-errors
Fix ICE when ADT tail has type error Fixes #124031
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commit
8859631b40
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@ -338,6 +338,10 @@ pub fn compute(
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debug_assert!(tail.has_non_region_param());
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Ok(SizeSkeleton::Pointer { non_zero, tail: tcx.erase_regions(tail) })
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}
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ty::Error(guar) => {
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// Fixes ICE #124031
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return Err(tcx.arena.alloc(LayoutError::ReferencesError(*guar)));
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}
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_ => bug!(
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"SizeSkeleton::compute({ty}): layout errored ({err:?}), yet \
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tail `{tail}` is not a type parameter or a projection",
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@ -1,10 +1,13 @@
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//@ known-bug: #124031
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// Regression test for issue #124031
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// Checks that we don't ICE when the tail
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// of an ADT has a type error
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trait Trait {
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type RefTarget;
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}
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impl Trait for () {}
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//~^ ERROR not all trait items implemented, missing: `RefTarget`
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struct Other {
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data: <() as Trait>::RefTarget,
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tests/ui/layout/ice-type-error-in-tail-124031.stderr
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12
tests/ui/layout/ice-type-error-in-tail-124031.stderr
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@ -0,0 +1,12 @@
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error[E0046]: not all trait items implemented, missing: `RefTarget`
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--> $DIR/ice-type-error-in-tail-124031.rs:9:1
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LL | type RefTarget;
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| -------------- `RefTarget` from trait
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...
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LL | impl Trait for () {}
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| ^^^^^^^^^^^^^^^^^ missing `RefTarget` in implementation
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0046`.
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