---

yaml
---
r: 162621
b: refs/heads/try
c: 67ba096
h: refs/heads/master
i:
  162619: 357c72d
v: v3

Author: michaelwoerister

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: 9146a919b616e39e528e4d7100d16eef52f1f852
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: cafe2966770ff377aad6dd9fd808e68055587c58
-refs/heads/try: 7608d06027a92ecd5255e760df3847e5418d5d31
+refs/heads/try: 67ba096cc30ec0f5fac8deec23d5557012e33d27
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596

branches/try/src/etc/lldb_rust_formatters.py

@@ -69,8 +69,14 @@ def print_struct_val_starting_from(field_start_index, val, internal_dict):
   assert val.GetType().GetTypeClass() == lldb.eTypeClassStruct
 
   t = val.GetType()
-  has_field_names = type_has_field_names(t)
   type_name = extract_type_name(t.GetName())
+  num_children = val.num_children
+
+  if (num_children - field_start_index) == 0:
+    # The only field of this struct is the enum discriminant
+    return type_name
+
+  has_field_names = type_has_field_names(t)
 
   if has_field_names:
       template = "%(type_name)s {\n%(body)s\n}"
@@ -83,8 +89,6 @@ def print_struct_val_starting_from(field_start_index, val, internal_dict):
     # this is a tuple, so don't print the type name
     type_name = ""
 
-  num_children = val.num_children
-
   def render_child(child_index):
     this = ""
     if has_field_names:
@@ -105,7 +109,6 @@ def print_enum_val(val, internal_dict):
 
   assert val.GetType().GetTypeClass() == lldb.eTypeClassUnion
 
-
   if val.num_children == 1:
     # This is either an enum with just one variant, or it is an Option-like enum
     # where the discriminant is encoded in a non-nullable pointer field. We find