From c4a5ac2a77baa577c50f689ee36a9d7a069557bd Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Mon, 15 Aug 2022 14:41:06 +0200
Subject: [PATCH 1/2] Handle correctly stripped enum variant fields

---
 src/librustdoc/json/conversions.rs | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/librustdoc/json/conversions.rs b/src/librustdoc/json/conversions.rs
index 5f3793ead42ba..1fedb0144d1d0 100644
--- a/src/librustdoc/json/conversions.rs
+++ b/src/librustdoc/json/conversions.rs
@@ -662,12 +662,10 @@ impl FromWithTcx<clean::Variant> for Variant {
             Tuple(fields) => Variant::Tuple(
                 fields
                     .into_iter()
-                    .map(|f| {
-                        if let clean::StructFieldItem(ty) = *f.kind {
-                            ty.into_tcx(tcx)
-                        } else {
-                            unreachable!()
-                        }
+                    .filter_map(|f| match *f.kind {
+                        clean::StructFieldItem(ty) => Some(ty.into_tcx(tcx)),
+                        clean::StrippedItem(_) => None,
+                        _ => unreachable!(),
                     })
                     .collect(),
             ),

From 36758a2444a9c71e845f9d9838a68a15b473d95e Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume.gomez@huawei.com>
Date: Mon, 15 Aug 2022 14:41:23 +0200
Subject: [PATCH 2/2] Add regression test for stripped enum variant fields

---
 src/test/rustdoc-json/enum_variant_hidden.rs | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/test/rustdoc-json/enum_variant_hidden.rs

diff --git a/src/test/rustdoc-json/enum_variant_hidden.rs b/src/test/rustdoc-json/enum_variant_hidden.rs
new file mode 100644
index 0000000000000..96c96a975d31a
--- /dev/null
+++ b/src/test/rustdoc-json/enum_variant_hidden.rs
@@ -0,0 +1,13 @@
+// Regression test for <https://github.com/rust-lang/rust/issues/100529>.
+
+#![no_core]
+#![feature(no_core)]
+
+// @has enum_variant_hidden.json "$.index[*][?(@.name=='ParseError')]"
+// @has - "$.index[*][?(@.name=='UnexpectedEndTag')]"
+// @is - "$.index[*][?(@.name=='UnexpectedEndTag')].inner.variant_kind" '"tuple"'
+// @is - "$.index[*][?(@.name=='UnexpectedEndTag')].inner.variant_inner" []
+
+pub enum ParseError {
+    UnexpectedEndTag(#[doc(hidden)] u32),
+}