Derive Clone along with Copy on latest stable.

Author: pepyakin

src/codegen/mod.rs

@@ -1642,7 +1642,10 @@ impl CodeGenerator for CompInfo {
             ctx.options().derive_copy
         {
             derives.push("Copy");
-            if used_template_params.is_some() {
+
+            if ctx.options().rust_features().builtin_clone_impls() || 
+                used_template_params.is_some() 
+            {
                 // FIXME: This requires extra logic if you have a big array in a
                 // templated struct. The reason for this is that the magic:
                 //     fn clone(&self) -> Self { *self }

src/features.rs

@@ -90,6 +90,8 @@ macro_rules! rust_target_base {
             => Stable_1_0 => 1.0;
             /// Rust stable 1.19
             => Stable_1_19 => 1.19;
+            /// Rust stable 1.21
+            => Stable_1_21 => 1.21;
             /// Nightly rust
             => Nightly => nightly;
         );
@@ -100,7 +102,7 @@ rust_target_base!(rust_target_def);
 rust_target_base!(rust_target_values_def);
 
 /// Latest stable release of Rust
-pub const LATEST_STABLE_RUST: RustTarget = RustTarget::Stable_1_19;
+pub const LATEST_STABLE_RUST: RustTarget = RustTarget::Stable_1_21;
 
 /// Create RustFeatures struct definition, new(), and a getter for each field
 macro_rules! rust_feature_def {
@@ -142,6 +144,8 @@ rust_feature_def!(
     => const_fn;
     /// `thiscall` calling convention ([Tracking issue](https://github.com/rust-lang/rust/issues/42202))
     => thiscall_abi;
+    /// builtin impls for `Clone` ([PR](https://github.com/rust-lang/rust/pull/43690))
+    => builtin_clone_impls;
 );
 
 impl From<RustTarget> for RustFeatures {
@@ -152,6 +156,10 @@ impl From<RustTarget> for RustFeatures {
             features.untagged_union = true;
         }
 
+        if rust_target >= RustTarget::Stable_1_21 {
+            features.builtin_clone_impls = true;
+        }
+
         if rust_target >= RustTarget::Nightly {
             features.const_fn = true;
             features.thiscall_abi = true;
@@ -183,6 +191,7 @@ mod test {
     fn str_to_target() {
         test_target("1.0", RustTarget::Stable_1_0);
         test_target("1.19", RustTarget::Stable_1_19);
+        test_target("1.21", RustTarget::Stable_1_21);
         test_target("nightly", RustTarget::Nightly);
     }
 }

tests/expectations/tests/16-byte-alignment.rs

@@ -5,21 +5,21 @@
 
 
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct rte_ipv4_tuple {
     pub src_addr: u32,
     pub dst_addr: u32,
     pub __bindgen_anon_1: rte_ipv4_tuple__bindgen_ty_1,
 }
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub union rte_ipv4_tuple__bindgen_ty_1 {
     pub __bindgen_anon_1: rte_ipv4_tuple__bindgen_ty_1__bindgen_ty_1,
     pub sctp_tag: u32,
     _bindgen_union_align: u32,
 }
 #[repr(C)]
-#[derive(Debug, Default, Copy, Hash, PartialEq, Eq)]
+#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
 pub struct rte_ipv4_tuple__bindgen_ty_1__bindgen_ty_1 {
     pub dport: u16,
     pub sport: u16,
@@ -67,11 +67,6 @@ fn bindgen_test_layout_rte_ipv4_tuple__bindgen_ty_1__bindgen_ty_1() {
         )
     );
 }
-impl Clone for rte_ipv4_tuple__bindgen_ty_1__bindgen_ty_1 {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 #[test]
 fn bindgen_test_layout_rte_ipv4_tuple__bindgen_ty_1() {
     assert_eq!(
@@ -95,11 +90,6 @@ fn bindgen_test_layout_rte_ipv4_tuple__bindgen_ty_1() {
         )
     );
 }
-impl Clone for rte_ipv4_tuple__bindgen_ty_1 {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Default for rte_ipv4_tuple__bindgen_ty_1 {
     fn default() -> Self {
         unsafe { ::std::mem::zeroed() }
@@ -138,32 +128,27 @@ fn bindgen_test_layout_rte_ipv4_tuple() {
         )
     );
 }
-impl Clone for rte_ipv4_tuple {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Default for rte_ipv4_tuple {
     fn default() -> Self {
         unsafe { ::std::mem::zeroed() }
     }
 }
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub struct rte_ipv6_tuple {
     pub src_addr: [u8; 16usize],
     pub dst_addr: [u8; 16usize],
     pub __bindgen_anon_1: rte_ipv6_tuple__bindgen_ty_1,
 }
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub union rte_ipv6_tuple__bindgen_ty_1 {
     pub __bindgen_anon_1: rte_ipv6_tuple__bindgen_ty_1__bindgen_ty_1,
     pub sctp_tag: u32,
     _bindgen_union_align: u32,
 }
 #[repr(C)]
-#[derive(Debug, Default, Copy, Hash, PartialEq, Eq)]
+#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
 pub struct rte_ipv6_tuple__bindgen_ty_1__bindgen_ty_1 {
     pub dport: u16,
     pub sport: u16,
@@ -211,11 +196,6 @@ fn bindgen_test_layout_rte_ipv6_tuple__bindgen_ty_1__bindgen_ty_1() {
         )
     );
 }
-impl Clone for rte_ipv6_tuple__bindgen_ty_1__bindgen_ty_1 {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 #[test]
 fn bindgen_test_layout_rte_ipv6_tuple__bindgen_ty_1() {
     assert_eq!(
@@ -239,11 +219,6 @@ fn bindgen_test_layout_rte_ipv6_tuple__bindgen_ty_1() {
         )
     );
 }
-impl Clone for rte_ipv6_tuple__bindgen_ty_1 {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Default for rte_ipv6_tuple__bindgen_ty_1 {
     fn default() -> Self {
         unsafe { ::std::mem::zeroed() }
@@ -282,18 +257,13 @@ fn bindgen_test_layout_rte_ipv6_tuple() {
         )
     );
 }
-impl Clone for rte_ipv6_tuple {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Default for rte_ipv6_tuple {
     fn default() -> Self {
         unsafe { ::std::mem::zeroed() }
     }
 }
 #[repr(C)]
-#[derive(Copy)]
+#[derive(Copy, Clone)]
 pub union rte_thash_tuple {
     pub v4: rte_ipv4_tuple,
     pub v6: rte_ipv6_tuple,
@@ -327,11 +297,6 @@ fn bindgen_test_layout_rte_thash_tuple() {
         )
     );
 }
-impl Clone for rte_thash_tuple {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Default for rte_thash_tuple {
     fn default() -> Self {
         unsafe { ::std::mem::zeroed() }

tests/expectations/tests/accessors.rs

@@ -5,7 +5,7 @@
 
 
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct SomeAccessors {
     pub mNoAccessor: ::std::os::raw::c_int,
     /// <div rustbindgen accessor></div>
@@ -68,11 +68,6 @@ fn bindgen_test_layout_SomeAccessors() {
         )
     );
 }
-impl Clone for SomeAccessors {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl SomeAccessors {
     #[inline]
     pub fn get_mBothAccessors(&self) -> &::std::os::raw::c_int {
@@ -97,7 +92,7 @@ impl SomeAccessors {
 }
 /// <div rustbindgen accessor></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct AllAccessors {
     pub mBothAccessors: ::std::os::raw::c_int,
     pub mAlsoBothAccessors: ::std::os::raw::c_int,
@@ -135,11 +130,6 @@ fn bindgen_test_layout_AllAccessors() {
         )
     );
 }
-impl Clone for AllAccessors {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl AllAccessors {
     #[inline]
     pub fn get_mBothAccessors(&self) -> &::std::os::raw::c_int {
@@ -160,7 +150,7 @@ impl AllAccessors {
 }
 /// <div rustbindgen accessor="unsafe"></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct AllUnsafeAccessors {
     pub mBothAccessors: ::std::os::raw::c_int,
     pub mAlsoBothAccessors: ::std::os::raw::c_int,
@@ -198,11 +188,6 @@ fn bindgen_test_layout_AllUnsafeAccessors() {
         )
     );
 }
-impl Clone for AllUnsafeAccessors {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl AllUnsafeAccessors {
     #[inline]
     pub unsafe fn get_mBothAccessors(&self) -> &::std::os::raw::c_int {
@@ -223,7 +208,7 @@ impl AllUnsafeAccessors {
 }
 /// <div rustbindgen accessor></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct ContradictAccessors {
     pub mBothAccessors: ::std::os::raw::c_int,
     /// <div rustbindgen accessor="false"></div>
@@ -286,11 +271,6 @@ fn bindgen_test_layout_ContradictAccessors() {
         )
     );
 }
-impl Clone for ContradictAccessors {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl ContradictAccessors {
     #[inline]
     pub fn get_mBothAccessors(&self) -> &::std::os::raw::c_int {
@@ -315,7 +295,7 @@ impl ContradictAccessors {
 }
 /// <div rustbindgen accessor replaces="Replaced"></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct Replaced {
     pub mAccessor: ::std::os::raw::c_int,
 }
@@ -342,11 +322,6 @@ fn bindgen_test_layout_Replaced() {
         )
     );
 }
-impl Clone for Replaced {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Replaced {
     #[inline]
     pub fn get_mAccessor(&self) -> &::std::os::raw::c_int {
@@ -359,7 +334,7 @@ impl Replaced {
 }
 /// <div rustbindgen accessor></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct Wrapper {
     pub mReplaced: Replaced,
 }
@@ -386,11 +361,6 @@ fn bindgen_test_layout_Wrapper() {
         )
     );
 }
-impl Clone for Wrapper {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 impl Wrapper {
     #[inline]
     pub fn get_mReplaced(&self) -> &Replaced {

tests/expectations/tests/annotation_hide.rs

@@ -7,7 +7,7 @@
 
 /// <div rustbindgen opaque></div>
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct D {
     pub _bindgen_opaque_blob: u32,
 }
@@ -24,13 +24,8 @@ fn bindgen_test_layout_D() {
         concat!("Alignment of ", stringify!(D))
     );
 }
-impl Clone for D {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 #[repr(C)]
-#[derive(Debug, Default, Copy)]
+#[derive(Debug, Default, Copy, Clone)]
 pub struct NotAnnotated {
     pub f: ::std::os::raw::c_int,
 }
@@ -57,8 +52,3 @@ fn bindgen_test_layout_NotAnnotated() {
         )
     );
 }
-impl Clone for NotAnnotated {
-    fn clone(&self) -> Self {
-        *self
-    }
-}

tests/expectations/tests/anon_enum.rs

@@ -5,7 +5,7 @@
 
 
 #[repr(C)]
-#[derive(Debug, Default, Copy, PartialEq)]
+#[derive(Debug, Default, Copy, Clone, PartialEq)]
 pub struct Test {
     pub foo: ::std::os::raw::c_int,
     pub bar: f32,
@@ -49,11 +49,6 @@ fn bindgen_test_layout_Test() {
         )
     );
 }
-impl Clone for Test {
-    fn clone(&self) -> Self {
-        *self
-    }
-}
 #[repr(u32)]
 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
 pub enum Baz {

tests/expectations/tests/anon_enum_trait.rs

@@ -24,7 +24,7 @@ pub enum DataType__bindgen_ty_1 {
     generic_type = 0,
 }
 #[repr(C)]
-#[derive(Debug, Default, Copy, Hash, PartialEq, Eq)]
+#[derive(Debug, Default, Copy, Clone, Hash, PartialEq, Eq)]
 pub struct Foo {
     pub _address: u8,
 }
@@ -48,8 +48,3 @@ fn bindgen_test_layout_Foo() {
         concat!("Alignment of ", stringify!(Foo))
     );
 }
-impl Clone for Foo {
-    fn clone(&self) -> Self {
-        *self
-    }
-}