Delete empty derives

Author: lucic71

cpp2rust/converter/models/converter_refcount.cpp

@@ -499,13 +499,8 @@ void ConverterRefCount::EmitRustUnion(clang::RecordDecl *decl) {
   auto attrs = GetStructAttributes(decl);
   Mapper::SetDerives(ctx_.getCanonicalTagType(decl),
                      std::vector<std::string>(attrs.begin(), attrs.end()));
-  StrCat("#[derive(");
-  for (auto *attr : attrs) {
-    StrCat(attr, ',');
-  }
-  StrCat(")]");
 
-  StrCat(std::format("pub struct {} {{ __bytes: Value<Box<[u8]>>, }}", name));
+  StrCat(std::format("pub struct {} {{ __bytes: Value<Box<[u8]>> }}", name));
 
   StrCat(std::format("impl {}", name));
   {

tests/unit/out/refcount/tag_vs_identifier_collision.rs

@@ -47,7 +47,6 @@ impl ByteRepr for point_struct {
         }
     }
 }
-#[derive()]
 pub struct point {
     __bytes: Value<Box<[u8]>>,
 }
@@ -74,7 +73,6 @@ impl Default for point {
     }
 }
 impl ByteRepr for point {}
-#[derive()]
 pub struct slot_union {
     __bytes: Value<Box<[u8]>>,
 }

tests/unit/out/refcount/union_basic.rs

@@ -6,7 +6,6 @@ use std::io::prelude::*;
 use std::io::{Read, Seek, Write};
 use std::os::fd::AsFd;
 use std::rc::{Rc, Weak};
-#[derive()]
 pub struct basic {
     __bytes: Value<Box<[u8]>>,
 }

tests/unit/out/refcount/union_pointer_pun_writethrough.rs

@@ -11,7 +11,6 @@ pub fn main() {
 }
 fn main_0() -> i32 {
     let x: Value<i64> = Rc::new(RefCell::new((-1_i32 as i64)));
-    #[derive()]
     pub struct anon_0 {
         __bytes: Value<Box<[u8]>>,
     }

tests/unit/out/refcount/union_tagged_struct_arms.rs

@@ -80,7 +80,6 @@ impl ByteRepr for anon_3 {
         }
     }
 }
-#[derive()]
 pub struct anon_0 {
     __bytes: Value<Box<[u8]>>,
 }