Don't use a turbofish when all parameters are lifetimes.

[ldk-c-bindings] / c-bindings-gen / src / main.rs

diff --git a/c-bindings-gen/src/main.rs b/c-bindings-gen/src/main.rs
index 2aeadaffac2e3024d3c92172bc24d82b5b06ca47..b07bb26afc64b194d3bbddc3b958eceb8346726a 100644 (file)
--- a/c-bindings-gen/src/main.rs
+++ b/c-bindings-gen/src/main.rs
@@ -1125,6 +1125,14 @@ fn writeln_impl<W: std::io::Write>(w: &mut W, i: &syn::ItemImpl, types: &mut Typ
                                                                                if idx != 0 { t_gen_args += ", " };
                                                                                t_gen_args += "_"
                                                                        }
+                                                                       // rustc doesn't like <_> if the _ is actually a lifetime, so
+                                                                       // if all the parameters are lifetimes just skip it.
+                                                                       let mut nonlifetime_param = false;
+                                                                       for param in $trait.generics.params.iter() {
+                                                                               if let syn::GenericParam::Lifetime(_) = param {}
+                                                                               else { nonlifetime_param = true; }
+                                                                       }
+                                                                       if !nonlifetime_param { t_gen_args = String::new(); }
                                                                        if takes_self {
                                                                                write!(w, "<native{} as {}<{}>>::{}(unsafe {{ &mut *(this_arg as *mut native{}) }}, ", ident, $trait_path, t_gen_args, $m.sig.ident, ident).unwrap();
                                                                        } else {