slightly more verbose error msg

2018-11-21 16:02:38 +01:00 · 2018-11-21 16:02:38 +01:00 · 694d2490f1
commit 694d2490f1
parent 41f89beb3f
1 changed files with 1 additions and 1 deletions
--- a/src/stacked_borrows.rs
+++ b/src/stacked_borrows.rs
@ -153,7 +153,7 @@ impl<'tcx> Stack {
    fn deref(&self, bor: Borrow, kind: RefKind) -> Result<Option<usize>, String> {
        // Exclude unique ref with frozen tag.
        if let (RefKind::Unique, Borrow::Shr(Some(_))) = (kind, bor) {
-            return Err(format!("Encountered mutable reference with frozen tag"));
+            return Err(format!("Encountered mutable reference with frozen tag ({:?})", bor));
        }
        // Checks related to freezing
        match bor {