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Show which type was not specialized on query cycle misuse

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This commit is contained in:
Oli Scherer 2023-07-04 07:56:54 +00:00
parent d6b82ff761
commit 97d831d008
1 changed files with 5 additions and 2 deletions
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7
compiler/rustc_query_system/src/values.rs
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@ -6,10 +6,13 @@ pub trait Value<Tcx: DepContext, D: DepKind>: Sized {
} }
impl<Tcx: DepContext, T, D: DepKind> Value<Tcx, D> for T { impl<Tcx: DepContext, T, D: DepKind> Value<Tcx, D> for T {
default fn from_cycle_error(tcx: Tcx, _: &[QueryInfo<D>]) -> T { default fn from_cycle_error(tcx: Tcx, cycle: &[QueryInfo<D>]) -> T {
tcx.sess().abort_if_errors(); tcx.sess().abort_if_errors();
// Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's // Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's
// non-trivial to define it earlier. // non-trivial to define it earlier.
panic!("Value::from_cycle_error called without errors"); panic!(
"<{} as Value>::from_cycle_error called without errors: {cycle:#?}",
std::any::type_name::<T>()
);
} }
} }