rustdoc: Gate unstable `doc(cfg())` predicates

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/rustdoc-ui/doc-cfg-unstable.rs b/tests/rustdoc-ui/doc-cfg-unstable.rs
new file mode 100644
index 00000000000..14c2e83ec85
--- /dev/null
+++ b/tests/rustdoc-ui/doc-cfg-unstable.rs
@@ -0,0 +1,10 @@
+// #138113: rustdoc didn't gate unstable predicates inside `doc(cfg(..))`
+#![feature(doc_cfg)]
+
+// `cfg_boolean_literals`
+#[doc(cfg(false))] //~ ERROR `cfg(false)` is experimental and subject to change
+pub fn cfg_boolean_literals() {}
+
+// `cfg_version`
+#[doc(cfg(sanitize = "thread"))] //~ ERROR `cfg(sanitize)` is experimental and subject to change
+pub fn cfg_sanitize() {}