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-rw-r--r--src/librustc_mir/interpret/visitor.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc_mir/interpret/visitor.rs b/src/librustc_mir/interpret/visitor.rs
index 24789ee1ebf..392e2791809 100644
--- a/src/librustc_mir/interpret/visitor.rs
+++ b/src/librustc_mir/interpret/visitor.rs
@@ -210,6 +210,7 @@ macro_rules! make_value_visitor {
             }
             fn walk_value(&mut self, v: Self::V) -> EvalResult<'tcx>
             {
+                trace!("walk_value: type: {}", v.layout().ty);
                 // If this is a multi-variant layout, we have find the right one and proceed with
                 // that.
                 match v.layout().variants {