macros/class: Propagate cfg annotations to COM class methods

We have a very peculiar workaround for DXC (pending upstream fix [microsoft/DirectXShaderCompiler#3793]) that requires us to conditionally provide function implementations for extra vtable "spacers": https://github.com/Traverse-Research/hassle-rs/blob/f5a090c70bbcf66f3bafd3d549716a414e873838/src/wrapper.rs#L130-L139. The spacers are conditionally defined in: https://github.com/Traverse-Research/hassle-rs/blob/f5a090c70bbcf66f3bafd3d549716a414e873838/src/unknown.rs. These need to be forwarded otherwise the initialization of these vtable members will happen unconditionally even when they don't exist: https://github.com/Traverse-Research/hassle-rs/actions/runs/1777800733 Fixes microsoft#166 [microsoft/DirectXShaderCompiler#3793]: microsoft/DirectXShaderCompiler#3793
MarijnS95 · Feb 1, 2022 · c8256cb · c8256cb
1 parent 2a9c899
commit c8256cb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/macros/support/src/class/class.rs b/macros/support/src/class/class.rs
@@ -625,7 +625,9 @@ impl Interface {
                 }
             };
             let field_name = Ident::new(&crate::utils::snake_to_camel(&original_name.to_string()), proc_macro2::Span::call_site());
+            let attrs = &m.item.attrs;
             quote! {
+                #(#attrs)*
                 #field_name: {
                     #method
                     #name