commit cecada6d383ed2b42943cfa65b0ebd6c32fb78c1
author David Tolnay <dtolnay@gmail.com> Tue Mar 17 01:45:58 2020 -0700
committer David Tolnay <dtolnay@gmail.com> Tue Mar 17 01:46:07 2020 -0700
tree 32ed4e6bbd7de7c5695913321e48a7d5e12d8f38
parent 8c1a558b4f733ff191c00a7299f7fa61bbf2b465

Fix fallible void return

macro/src/expand.rs

diff --git a/macro/src/expand.rs b/macro/src/expand.rs
index b6bc099..88fc812 100644
--- a/macro/src/expand.rs
+++ b/macro/src/expand.rs
@@ -293,7 +293,11 @@
         outparam = Some(quote!(__return: *mut #ret));
     }
     if efn.throws {
-        expr = quote!(::cxx::private::r#try(__return, #expr));
+        let out = match efn.ret {
+            Some(_) => quote!(__return),
+            None => quote!(&mut ()),
+        };
+        expr = quote!(::cxx::private::r#try(#out, #expr));
     } else if indirect_return {
         expr = quote!(::std::ptr::write(__return, #expr));
     }