diff options
Diffstat (limited to 'compiler/rustc_query_system/src/values.rs')
-rw-r--r-- | compiler/rustc_query_system/src/values.rs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/compiler/rustc_query_system/src/values.rs b/compiler/rustc_query_system/src/values.rs index b6e2cfa3d..ce551078c 100644 --- a/compiler/rustc_query_system/src/values.rs +++ b/compiler/rustc_query_system/src/values.rs @@ -6,10 +6,13 @@ pub trait Value<Tcx: DepContext, D: DepKind>: Sized { } 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(); // Ideally we would use `bug!` here. But bug! is only defined in rustc_middle, and it's // 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>() + ); } } |