Add more missing methods to `IntraLinkCrateLoader`

This helps with (but does not fix)
https://github.com/rust-lang/rust/issues/84738. I tested on
https://github.com/jyn514/objr/commit/edcee7b8124abf0e4c63873e8422ff81beb11ebb
and still hit ICEs.

(cherry picked from commit cdafe9953938150b8ad296a472a8416d64d1b5ec)

5 files changed, 30 insertions, 0 deletions

diff --git a/src/test/rustdoc-ui/intra-doc/auxiliary/dep1.rs b/src/test/rustdoc-ui/intra-doc/auxiliary/dep1.rs
new file mode 100644
index 00000000000..d11c69f812a
--- /dev/null
+++ b/src/test/rustdoc-ui/intra-doc/auxiliary/dep1.rs
@@ -0,0 +1 @@
+// intentionally empty
diff --git a/src/test/rustdoc-ui/intra-doc/auxiliary/dep2.rs b/src/test/rustdoc-ui/intra-doc/auxiliary/dep2.rs
new file mode 100644
index 00000000000..d11c69f812a
--- /dev/null
+++ b/src/test/rustdoc-ui/intra-doc/auxiliary/dep2.rs
@@ -0,0 +1 @@
+// intentionally empty
diff --git a/src/test/rustdoc-ui/intra-doc/auxiliary/dep3.rs b/src/test/rustdoc-ui/intra-doc/auxiliary/dep3.rs
new file mode 100644
index 00000000000..d11c69f812a
--- /dev/null
+++ b/src/test/rustdoc-ui/intra-doc/auxiliary/dep3.rs
@@ -0,0 +1 @@
+// intentionally empty
diff --git a/src/test/rustdoc-ui/intra-doc/auxiliary/dep4.rs b/src/test/rustdoc-ui/intra-doc/auxiliary/dep4.rs
new file mode 100644
index 00000000000..d11c69f812a
--- /dev/null
+++ b/src/test/rustdoc-ui/intra-doc/auxiliary/dep4.rs
@@ -0,0 +1 @@
+// intentionally empty
diff --git a/src/test/rustdoc-ui/intra-doc/extern-crate-load.rs b/src/test/rustdoc-ui/intra-doc/extern-crate-load.rs
new file mode 100644
index 00000000000..438c56aa516
--- /dev/null
+++ b/src/test/rustdoc-ui/intra-doc/extern-crate-load.rs
@@ -0,0 +1,26 @@
+// check-pass
+// aux-crate:dep1=dep1.rs
+// aux-crate:dep2=dep2.rs
+// aux-crate:dep3=dep3.rs
+// aux-crate:dep4=dep4.rs
+#![deny(rustdoc::broken_intra_doc_links)]
+
+pub trait Trait {
+    /// [dep1]
+    type Item;
+}
+
+pub struct S {
+    /// [dep2]
+    pub x: usize,
+}
+
+extern "C" {
+    /// [dep3]
+    pub fn printf();
+}
+
+pub enum E {
+    /// [dep4]
+    A
+}