Add rustdoc hack

rust-lang · Feb 2, 2024 · 47c97b1 · 47c97b1
1 parent 965da3a
commit 47c97b1
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/compiler/rustc_hir_analysis/src/coherence/builtin.rs b/compiler/rustc_hir_analysis/src/coherence/builtin.rs
@@ -104,7 +104,12 @@ fn visit_implementation_of_copy(
             Err(infringing_fields_error(tcx, fields, LangItem::Copy, impl_did, span))
         }
         Err(CopyImplementationError::NotAnAdt) => {
-            Err(tcx.dcx().emit_err(errors::CopyImplOnNonAdt { span }))
+            if tcx.sess.opts.actually_rustdoc {
+                // HACK(rustdoc): `impl<Ret, T> Copy for fn(T) -> Ret` just for docs.
+                Ok(())
+            } else {
+                Err(tcx.dcx().emit_err(errors::CopyImplOnNonAdt { span }))
+            }
         }
         Err(CopyImplementationError::HasDestructor) => {
             Err(tcx.dcx().emit_err(errors::CopyImplOnTypeWithDtor { span }))