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-rw-r--r--libstdc++-v3/include/ext/pb_ds/trie_policy.hpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/trie_policy.hpp b/libstdc++-v3/include/ext/pb_ds/trie_policy.hpp
index 0b0683d..9c750aa 100644
--- a/libstdc++-v3/include/ext/pb_ds/trie_policy.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/trie_policy.hpp
@@ -315,7 +315,7 @@ namespace __gnu_pbds
typedef typename __rebind_ma::reference metadata_reference;
/// Returns true if the container is empty.
- virtual bool
+ _GLIBCXX_NODISCARD virtual bool
empty() const = 0;
/// Returns the iterator associated with the trie's first element.