diff --git a/compiler/rustc_data_structures/src/steal.rs b/compiler/rustc_data_structures/src/steal.rs index 9a0fd52677d..f305a8ad120 100644 --- a/compiler/rustc_data_structures/src/steal.rs +++ b/compiler/rustc_data_structures/src/steal.rs @@ -51,6 +51,12 @@ impl Steal { let value = value_ref.take(); value.expect("attempt to steal from stolen value") } + + /// Writers of rustc drivers often encounter stealing issues. This function makes it possible to + /// handle these errors gracefully. This is not used within rustc as the time of writing. + pub fn is_stolen(&self) -> bool { + self.value.borrow().is_none() + } } impl> HashStable for Steal {