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-rw-r--r--compiler/rustc_session/src/config.rs5
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs
index 12c5c4445d4..330201dd8fe 100644
--- a/compiler/rustc_session/src/config.rs
+++ b/compiler/rustc_session/src/config.rs
@@ -1038,6 +1038,7 @@ impl CrateCheckConfig {
             sym::target_has_atomic_load_store,
             sym::target_has_atomic,
             sym::target_has_atomic_equal_alignment,
+            sym::target_feature,
             sym::panic,
             sym::sanitize,
             sym::debug_assertions,
@@ -1081,6 +1082,10 @@ impl CrateCheckConfig {
             .into_iter()
             .map(|sanitizer| Symbol::intern(sanitizer.as_str().unwrap()));
 
+        // Unknown possible values:
+        //  - `feature`
+        //  - `target_feature`
+
         // No-values
         for name in [
             sym::doc,