avoid cycles in mir-dump, take 2

rust-lang · May 16, 2017 · 7caf084 · 7caf084
1 parent d9a3f62
commit 7caf084
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/librustc_mir/util/pretty.rs b/src/librustc_mir/util/pretty.rs
@@ -324,7 +324,9 @@ fn write_mir_sig(tcx: TyCtxt, src: MirSource, mir: &Mir, w: &mut Write)
         MirSource::Promoted(_, i) => write!(w, "{:?} in", i)?
     }
 
-    write!(w, " {}", tcx.node_path_str(src.item_id()))?;
+    item_path::with_forced_impl_filename_line(|| { // see notes on #41697 elsewhere
+        write!(w, " {}", tcx.node_path_str(src.item_id()))
+    })?;
 
     if let MirSource::Fn(_) = src {
         write!(w, "(")?;