---

yaml
---
r: 4185
b: refs/heads/master
c: 73e8e49
h: refs/heads/master
i:
  4183: 9d7df72
v: v3

Author: marijnh

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0186176ae989cc5ccce1cf90322c567eee084dbf
+refs/heads/master: 73e8e49897c2a92d5908e89f392bd40386219aab

trunk/src/rt/rust_builtin.cpp

@@ -312,8 +312,9 @@ str_byte_len(rust_task *task, rust_str *s)
 extern "C" CDECL rust_str *
 str_from_ivec(rust_task *task, rust_ivec *v)
 {
-    uintptr_t fill = v->fill ? v->fill : v->payload.ptr->fill;
-    void *data = v->fill ? v->payload.data : v->payload.ptr->data;
+    bool is_interior = v->fill || !v->payload.ptr;
+    uintptr_t fill = is_interior ? v->fill : v->payload.ptr->fill;
+    void *data = is_interior ? v->payload.data : v->payload.ptr->data;
 
     rust_str *st =
         vec_alloc_with_data(task,