1 files changed, 1409 insertions, 0 deletions
diff --git a/tests/incremental/hashes/trait_defs.rs b/tests/incremental/hashes/trait_defs.rs
new file mode 100644
index 000000000..b583bee2f
--- /dev/null
+++ b/tests/incremental/hashes/trait_defs.rs
@@ -0,0 +1,1409 @@
+// This test case tests the incremental compilation hash (ICH) implementation
+// for trait definitions.
+
+// The general pattern followed here is: Change one thing between rev1 and rev2
+// and make sure that the hash has changed, then change nothing between rev2 and
+// rev3 and make sure that the hash has not changed.
+
+// We also test the ICH for trait definitions exported in metadata. Same as
+// above, we want to make sure that the change between rev1 and rev2 also
+// results in a change of the ICH for the trait's metadata, and that it stays
+// the same between rev2 and rev3.
+
+// build-pass (FIXME(62277): could be check-pass?)
+// revisions: cfail1 cfail2 cfail3 cfail4 cfail5 cfail6
+// compile-flags: -Z query-dep-graph -O
+// [cfail1]compile-flags: -Zincremental-ignore-spans
+// [cfail2]compile-flags: -Zincremental-ignore-spans
+// [cfail3]compile-flags: -Zincremental-ignore-spans
+
+#![allow(warnings)]
+#![feature(rustc_attrs)]
+#![crate_type="rlib"]
+#![feature(associated_type_defaults)]
+
+
+// Change trait visibility
+#[cfg(any(cfail1,cfail4))]
+trait TraitVisibility { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5", except="hir_owner,hir_owner_nodes")]
+#[rustc_clean(cfg="cfail6")]
+pub trait TraitVisibility { }
+
+
+
+// Change trait unsafety
+#[cfg(any(cfail1,cfail4))]
+trait TraitUnsafety { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+unsafe trait TraitUnsafety { }
+
+
+
+// Add method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddMethod {
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+pub trait TraitAddMethod {
+    fn method();
+}
+
+
+
+// Change name of method
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeMethodName {
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeMethodName {
+    fn methodChanged();
+}
+
+
+
+// Add return type to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddReturnType {
+    //---------------------------------------------------------------------
+    //--------------------------
+    //---------------------------------------------------------------------
+    //--------------------------
+    fn method()       ;
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddReturnType {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method() -> u32;
+}
+
+
+
+// Change return type of method
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeReturnType {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method() -> u32;
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeReturnType {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method() -> u64;
+}
+
+
+
+// Add parameter to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddParameterToMethod {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method(      );
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddParameterToMethod {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(a: u32);
+}
+
+
+
+// Change name of method parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeMethodParameterName {
+    //------------------------------------------------------
+    //--------------------------------------------------------------
+    //--------------------------
+    //--------------------------------------------------------------
+    //--------------------------
+    fn method(a: u32);
+
+    //------------------------------------------------------------------
+    //--------------------------
+    //------------------------------------------------------------------
+    //--------------------------
+    fn with_default(x: i32) {}
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeMethodParameterName {
+    // FIXME(#38501) This should preferably always be clean.
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(b: u32);
+
+    #[rustc_clean(except="hir_owner_nodes,optimized_mir", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner_nodes,optimized_mir", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn with_default(y: i32) {}
+}
+
+
+
+// Change type of method parameter (i32 => i64)
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeMethodParameterType {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method(a: i32);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeMethodParameterType {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(a: i64);
+}
+
+
+
+// Change type of method parameter (&i32 => &mut i32)
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeMethodParameterTypeRef {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method(a: &    i32);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeMethodParameterTypeRef {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(a: &mut i32);
+}
+
+
+
+// Change order of method parameters
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeMethodParametersOrder {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method(a: i32, b: i64);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeMethodParametersOrder {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(b: i64, a: i32);
+}
+
+
+
+// Add default implementation to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddMethodAutoImplementation {
+    // -------------------------------------------------------------
+    // -------------------------
+    // -------------------------------------------------------------
+    // -------------------------
+    fn method()  ;
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddMethodAutoImplementation {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method() {}
+}
+
+
+
+// Change order of methods
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeOrderOfMethods {
+    fn method0();
+    fn method1();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeOrderOfMethods {
+    fn method1();
+    fn method0();
+}
+
+
+
+// Change mode of self parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeModeSelfRefToMut {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method(&    self);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeModeSelfRefToMut {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(&mut self);
+}
+
+
+
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeModeSelfOwnToMut: Sized {
+    // ----------------------------------------------------------------------------------
+    // -------------------------
+    // ----------------------------------------------------------------------------------
+    // -------------------------
+    fn method(    self) {}
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeModeSelfOwnToMut: Sized {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,typeck,optimized_mir", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,typeck,optimized_mir", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(mut self) {}
+}
+
+
+
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeModeSelfOwnToRef {
+    // --------------------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------------------
+    // -------------------------
+    fn method( self);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeModeSelfOwnToRef {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig,generics_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig,generics_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method(&self);
+}
+
+
+
+// Add unsafe modifier to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddUnsafeModifier {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method()       ;
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddUnsafeModifier {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    unsafe fn method();
+}
+
+
+
+// Add extern modifier to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddExternModifier {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    fn method()           ;
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddExternModifier {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    extern "C" fn method();
+}
+
+
+
+// Change extern "C" to extern "stdcall"
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeExternCToRustIntrinsic {
+    // --------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------
+    // -------------------------
+    extern "C"       fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeExternCToRustIntrinsic {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    extern "stdcall" fn method();
+}
+
+
+
+// Add type parameter to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTypeParameterToMethod {
+    // --------------------------------------------------------------------------------
+    // ---------------
+    // -------------------------
+    // --------------------------------------------------------------------------------
+    // ---------------
+    // -------------------------
+    fn method   ();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTypeParameterToMethod {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of,type_of",
+        cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of,type_of",
+        cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<T>();
+}
+
+
+
+// Add lifetime parameter to method
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeParameterToMethod {
+    // --------------------------------------------------------------------------------
+    // -------------------------
+    // --------------------------------------------------------------------------------
+    // -------------------------
+    fn method    ();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeParameterToMethod {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig,generics_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig,generics_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<'a>();
+}
+
+
+
+// dummy trait for bound
+trait ReferencedTrait0 { }
+trait ReferencedTrait1 { }
+
+// Add trait bound to method type parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitBoundToMethodTypeParameter {
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    fn method<T                  >();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitBoundToMethodTypeParameter {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<T: ReferencedTrait0>();
+}
+
+
+
+// Add builtin bound to method type parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltinBoundToMethodTypeParameter {
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    fn method<T       >();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltinBoundToMethodTypeParameter {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<T: Sized>();
+}
+
+
+
+// Add lifetime bound to method lifetime parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToMethodLifetimeParameter {
+    // -----------
+    // -----------------------------------------------------------------------------
+    // --------------
+    //
+    // -------------------------
+    // -----------
+    // -----------------------------------------------------------------------------
+    // --------------
+    //
+    // -------------------------
+    fn method<'a, 'b    >(a: &'a u32, b: &'b u32);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToMethodLifetimeParameter {
+    #[rustc_clean(
+        except="hir_owner,hir_owner_nodes,generics_of,predicates_of,fn_sig,type_of",
+        cfg="cfail2",
+    )]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(
+        except="hir_owner,hir_owner_nodes,generics_of,predicates_of,fn_sig,type_of",
+        cfg="cfail5",
+    )]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<'a, 'b: 'a>(a: &'a u32, b: &'b u32);
+}
+
+
+
+// Add second trait bound to method type parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondTraitBoundToMethodTypeParameter {
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    fn method<T: ReferencedTrait0                   >();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondTraitBoundToMethodTypeParameter {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<T: ReferencedTrait0 + ReferencedTrait1>();
+}
+
+
+
+// Add second builtin bound to method type parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondBuiltinBoundToMethodTypeParameter {
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    // ---------------------------------------------------------------------------
+    // -------------------------
+    fn method<T: Sized       >();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondBuiltinBoundToMethodTypeParameter {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<T: Sized + Sync>();
+}
+
+
+
+// Add second lifetime bound to method lifetime parameter
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeBoundToMethodLifetimeParameter {
+    // -----------
+    // -----------------------------------------------------------------------------
+    // --------------
+    //
+    // -------------------------
+    // -----------
+    // -----------------------------------------------------------------------------
+    // --------------
+    //
+    // -------------------------
+    fn method<'a, 'b, 'c: 'a     >(a: &'a u32, b: &'b u32, c: &'c u32);
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeBoundToMethodLifetimeParameter {
+    #[rustc_clean(
+        except="hir_owner,hir_owner_nodes,generics_of,predicates_of,fn_sig,type_of",
+        cfg="cfail2",
+    )]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(
+        except="hir_owner,hir_owner_nodes,generics_of,predicates_of,fn_sig,type_of",
+        cfg="cfail5",
+    )]
+    #[rustc_clean(cfg="cfail6")]
+    fn method<'a, 'b, 'c: 'a + 'b>(a: &'a u32, b: &'b u32, c: &'c u32);
+}
+
+
+
+// Add associated type
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddAssociatedType {
+    //--------------------------
+    //--------------------------
+    // -------------
+
+    //--------------------------
+    //--------------------------
+    //--------------------------
+    //--------------------------
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddAssociatedType {
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail6")]
+    type Associated;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method();
+}
+
+
+
+// Add trait bound to associated type
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitBoundToAssociatedType {
+    // -------------------------------------------------------------
+    // -------------------------
+    // -------------------------------------------------------------
+    // -------------------------
+    type Associated                  ;
+
+    fn method();
+}
+
+
+// Apparently the type bound contributes to the predicates of the trait, but
+// does not change the associated item itself.
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitBoundToAssociatedType {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    type Associated: ReferencedTrait0;
+
+    fn method();
+}
+
+
+
+// Add lifetime bound to associated type
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToAssociatedType<'a> {
+    // -------------------------------------------------------------
+    // -------------------------
+    // -------------------------------------------------------------
+    // -------------------------
+    type Associated    ;
+
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToAssociatedType<'a> {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    type Associated: 'a;
+
+    fn method();
+}
+
+
+
+// Add default to associated type
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddDefaultToAssociatedType {
+    //--------------------------------------------------------------
+    //--------------------------
+    //--------------------------------------------------------------
+    //--------------------------
+    type Associated                 ;
+
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddDefaultToAssociatedType {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    type Associated = ReferenceType0;
+
+    fn method();
+}
+
+
+
+// Add associated constant
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddAssociatedConstant {
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,associated_item_def_ids", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddAssociatedConstant {
+    const Value: u32;
+
+    fn method();
+}
+
+
+
+// Add initializer to associated constant
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddInitializerToAssociatedConstant {
+    //--------------------------------------------------------------
+    //--------------------------
+    //--------------------------------------------------------------
+    //--------------------------
+    const Value: u32    ;
+
+    //--------------------------
+    //--------------------------
+    //--------------------------
+    //--------------------------
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner_nodes", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddInitializerToAssociatedConstant {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    const Value: u32 = 1;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method();
+}
+
+
+
+// Change type of associated constant
+#[cfg(any(cfail1,cfail4))]
+trait TraitChangeTypeOfAssociatedConstant {
+    // ---------------------------------------------------------------------
+    // -------------------------
+    // ---------------------------------------------------------------------
+    // -------------------------
+    const Value: u32;
+
+    // -------------------------
+    // -------------------------
+    // -------------------------
+    // -------------------------
+    fn method();
+}
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitChangeTypeOfAssociatedConstant {
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,type_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,type_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    const Value: f64;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    fn method();
+}
+
+
+
+// Add super trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSuperTrait { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSuperTrait : ReferencedTrait0 { }
+
+
+
+// Add builtin bound (Send or Copy)
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltiBound { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltiBound : Send { }
+
+
+
+// Add 'static lifetime bound to trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddStaticLifetimeBound { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddStaticLifetimeBound : 'static { }
+
+
+
+// Add super trait as second bound
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitAsSecondBound : ReferencedTrait0 { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitAsSecondBound : ReferencedTrait0 + ReferencedTrait1 { }
+
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitAsSecondBoundFromBuiltin : Send { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitAsSecondBoundFromBuiltin : Send + ReferencedTrait0 { }
+
+
+
+// Add builtin bound as second bound
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltinBoundAsSecondBound : ReferencedTrait0 { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltinBoundAsSecondBound : ReferencedTrait0 + Send { }
+
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltinBoundAsSecondBoundFromBuiltin : Send { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltinBoundAsSecondBoundFromBuiltin: Send + Copy { }
+
+
+
+// Add 'static bounds as second bound
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddStaticBoundAsSecondBound : ReferencedTrait0 { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddStaticBoundAsSecondBound : ReferencedTrait0 + 'static { }
+
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddStaticBoundAsSecondBoundFromBuiltin : Send { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddStaticBoundAsSecondBoundFromBuiltin : Send + 'static { }
+
+
+
+// Add type parameter to trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTypeParameterToTrait { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTypeParameterToTrait<T> { }
+
+
+
+// Add lifetime parameter to trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeParameterToTrait { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeParameterToTrait<'a> { }
+
+
+
+// Add trait bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitBoundToTypeParameterOfTrait<T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitBoundToTypeParameterOfTrait<T: ReferencedTrait0> { }
+
+
+
+// Add lifetime bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToTypeParameterOfTrait<'a, T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToTypeParameterOfTrait<'a, T: 'a> { }
+
+
+
+// Add lifetime bound to lifetime parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToLifetimeParameterOfTrait<'a, 'b> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToLifetimeParameterOfTrait<'a: 'b, 'b> { }
+
+
+
+// Add builtin bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltinBoundToTypeParameterOfTrait<T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltinBoundToTypeParameterOfTrait<T: Send> { }
+
+
+
+// Add second type parameter to trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondTypeParameterToTrait<T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondTypeParameterToTrait<T, S> { }
+
+
+
+// Add second lifetime parameter to trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeParameterToTrait<'a> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,generics_of,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeParameterToTrait<'a, 'b> { }
+
+
+
+// Add second trait bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondTraitBoundToTypeParameterOfTrait<T: ReferencedTrait0> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondTraitBoundToTypeParameterOfTrait<T: ReferencedTrait0 + ReferencedTrait1> { }
+
+
+
+// Add second lifetime bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeBoundToTypeParameterOfTrait<'a, 'b, T: 'a> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeBoundToTypeParameterOfTrait<'a, 'b, T: 'a + 'b> { }
+
+
+
+// Add second lifetime bound to lifetime parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeBoundToLifetimeParameterOfTrait<'a: 'b, 'b, 'c> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeBoundToLifetimeParameterOfTrait<'a: 'b + 'c, 'b, 'c> { }
+
+
+
+// Add second builtin bound to type parameter of trait
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondBuiltinBoundToTypeParameterOfTrait<T: Send> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondBuiltinBoundToTypeParameterOfTrait<T: Send + Sync> { }
+
+
+
+struct ReferenceType0 {}
+struct ReferenceType1 {}
+
+
+
+// Add trait bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddTraitBoundToTypeParameterOfTraitWhere<T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddTraitBoundToTypeParameterOfTraitWhere<T> where T: ReferencedTrait0 { }
+
+
+
+// Add lifetime bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToTypeParameterOfTraitWhere<'a, T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToTypeParameterOfTraitWhere<'a, T> where T: 'a { }
+
+
+
+// Add lifetime bound to lifetime parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddLifetimeBoundToLifetimeParameterOfTraitWhere<'a, 'b> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddLifetimeBoundToLifetimeParameterOfTraitWhere<'a, 'b> where 'a: 'b { }
+
+
+
+// Add builtin bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddBuiltinBoundToTypeParameterOfTraitWhere<T> { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddBuiltinBoundToTypeParameterOfTraitWhere<T> where T: Send { }
+
+
+
+// Add second trait bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondTraitBoundToTypeParameterOfTraitWhere<T> where T: ReferencedTrait0 { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondTraitBoundToTypeParameterOfTraitWhere<T>
+    where T: ReferencedTrait0 + ReferencedTrait1 { }
+
+
+
+// Add second lifetime bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeBoundToTypeParameterOfTraitWhere<'a, 'b, T> where T: 'a { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeBoundToTypeParameterOfTraitWhere<'a, 'b, T> where T: 'a + 'b { }
+
+
+
+// Add second lifetime bound to lifetime parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondLifetimeBoundToLifetimeParameterOfTraitWhere<'a, 'b, 'c> where 'a: 'b { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondLifetimeBoundToLifetimeParameterOfTraitWhere<'a, 'b, 'c> where 'a: 'b + 'c { }
+
+
+
+// Add second builtin bound to type parameter of trait in where clause
+#[cfg(any(cfail1,cfail4))]
+trait TraitAddSecondBuiltinBoundToTypeParameterOfTraitWhere<T> where T: Send { }
+
+#[cfg(not(any(cfail1,cfail4)))]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+#[rustc_clean(cfg="cfail3")]
+#[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+#[rustc_clean(cfg="cfail6")]
+trait TraitAddSecondBuiltinBoundToTypeParameterOfTraitWhere<T> where T: Send + Sync { }
+
+
+// Change return type of method indirectly by modifying a use statement
+mod change_return_type_of_method_indirectly_use {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferenceType0 as ReturnType;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferenceType1 as ReturnType;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeReturnType {
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+        #[rustc_clean(cfg="cfail3")]
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+        #[rustc_clean(cfg="cfail6")]
+        fn method() -> ReturnType;
+    }
+}
+
+
+
+// Change type of method parameter indirectly by modifying a use statement
+mod change_method_parameter_type_indirectly_by_use {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferenceType0 as ArgType;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferenceType1 as ArgType;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeArgType {
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail2")]
+        #[rustc_clean(cfg="cfail3")]
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,fn_sig", cfg="cfail5")]
+        #[rustc_clean(cfg="cfail6")]
+        fn method(a: ArgType);
+    }
+}
+
+
+
+// Change trait bound of method type parameter indirectly by modifying a use statement
+mod change_method_parameter_type_bound_indirectly_by_use {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait0 as Bound;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait1 as Bound;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeBoundOfMethodTypeParameter {
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+        #[rustc_clean(cfg="cfail3")]
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+        #[rustc_clean(cfg="cfail6")]
+        fn method<T: Bound>(a: T);
+    }
+}
+
+
+
+// Change trait bound of method type parameter in where clause indirectly
+// by modifying a use statement
+mod change_method_parameter_type_bound_indirectly_by_use_where {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait0 as Bound;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait1 as Bound;
+
+    #[rustc_clean(cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeBoundOfMethodTypeParameterWhere {
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+        #[rustc_clean(cfg="cfail3")]
+        #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+        #[rustc_clean(cfg="cfail6")]
+        fn method<T>(a: T) where T: Bound;
+    }
+}
+
+
+
+// Change trait bound of trait type parameter indirectly by modifying a use statement
+mod change_method_type_parameter_bound_indirectly {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait0 as Bound;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait1 as Bound;
+
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeTraitBound<T: Bound> {
+        fn method(a: T);
+    }
+}
+
+
+
+// Change trait bound of trait type parameter in where clause indirectly
+// by modifying a use statement
+mod change_method_type_parameter_bound_indirectly_where {
+    #[cfg(any(cfail1,cfail4))]
+    use super::ReferencedTrait0 as Bound;
+    #[cfg(not(any(cfail1,cfail4)))]
+    use super::ReferencedTrait1 as Bound;
+
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail2")]
+    #[rustc_clean(cfg="cfail3")]
+    #[rustc_clean(except="hir_owner,hir_owner_nodes,predicates_of", cfg="cfail5")]
+    #[rustc_clean(cfg="cfail6")]
+    trait TraitChangeTraitBoundWhere<T> where T: Bound {
+        fn method(a: T);
+    }
+}