diff --git a/src/librustc_feature/active.rs b/src/librustc_feature/active.rs
index b4935236b6a97c8d3aaf70926d6172b201cbc1b0..d186f35a12b5a1f9566ea39b2aa4e05a532af4d0 100644
--- a/src/librustc_feature/active.rs
+++ b/src/librustc_feature/active.rs
@@ -577,6 +577,9 @@ pub fn set(&self, features: &mut Features, span: Span) {
     /// Allows `extern "avr-interrupt" fn()` and `extern "avr-non-blocking-interrupt" fn()`.
     (active, abi_avr_interrupt, "1.45.0", Some(69664), None),
 
+    /// Be more precise when looking for live drops in a const context.
+    (active, const_precise_live_drops, "1.46.0", Some(73255), None),
+
     // -------------------------------------------------------------------------
     // feature-group-end: actual feature gates
     // -------------------------------------------------------------------------
diff --git a/src/librustc_span/symbol.rs b/src/librustc_span/symbol.rs
index fea5880f01ebd045dace8ff38305a0eee202b611..fdeb58b7b7a313608229ffa056b15e8caec96a81 100644
--- a/src/librustc_span/symbol.rs
+++ b/src/librustc_span/symbol.rs
@@ -227,6 +227,7 @@
         const_loop,
         const_mut_refs,
         const_panic,
+        const_precise_live_drops,
         const_raw_ptr_deref,
         const_raw_ptr_to_usize_cast,
         const_transmute,