Mark the exit of infinite loops as unreachable

rust-lang · Jun 4, 2014 · 6d3e89e · 6d3e89e
1 parent d130acc
commit 6d3e89e
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/librustc/middle/trans/controlflow.rs b/src/librustc/middle/trans/controlflow.rs
@@ -264,6 +264,10 @@ pub fn trans_loop<'a>(bcx:&'a Block<'a>,
 
     fcx.pop_loop_cleanup_scope(loop_id);
 
+    if ty::type_is_bot(node_id_type(bcx, loop_id)) {
+        Unreachable(next_bcx_in);
+    }
+
     return next_bcx_in;
 }