Include map length in diagnostics

components/hashglobe/src/diagnostic.rs

@@ -166,7 +166,7 @@ impl<K: Hash + Eq, V, S: BuildHasher> DiagnosticHashMap<K, V, S>
         canary: usize,
         canary_addr: *const usize,
         position: usize,
-        count: usize,
+        count: usize
     ) {
         use ::std::ffi::CString;
         let key = b"HashMapJournal\0";
@@ -179,9 +179,10 @@ impl<K: Hash + Eq, V, S: BuildHasher> DiagnosticHashMap<K, V, S>
         }
 
         panic!(
-            concat!("HashMap Corruption (sz={}, cap={}, pairsz={}, hash={:#x}, cnry={:#x}, ",
+            concat!("HashMap Corruption (sz={}, buffer_hash_sz={}, cap={}, pairsz={}, hash={:#x}, cnry={:#x}, ",
                 "count={}, last_pos={}, base_addr={:?}, cnry_addr={:?}, jrnl_len={})"),
             self.map.len(),
+            self.map.diagnostic_count_hashes(),
             self.map.raw_capacity(),
             ::std::mem::size_of::<(K, (usize, V))>(),
             hash,

components/hashglobe/src/hash_map.rs

@@ -1257,6 +1257,10 @@ impl<K, V, S> HashMap<K, V, S>
             debug_assert!(elems_left == 0 || bucket.index() != start_index);
         }
     }
+
+    pub fn diagnostic_count_hashes(&self) -> usize {
+        self.table.diagnostic_count_hashes()
+    }
 }
 
 impl<K, V, S> PartialEq for HashMap<K, V, S>

components/hashglobe/src/table.rs

@@ -896,6 +896,10 @@ impl<K, V> RawTable<K, V> {
         }
     }
 
+    pub fn diagnostic_count_hashes(&self) -> usize {
+        (0..self.capacity()).filter(|&i| unsafe { *self.raw_bucket_at(i).hash() != EMPTY_BUCKET }).count()
+    }
+
     pub fn iter(&self) -> Iter<K, V> {
         Iter {
             iter: self.raw_buckets(),