Avoid overflow in PostingListSearchContextT::approximateHits() member function.

1 files changed, 2 insertions, 2 deletions

diff --git a/searchlib/src/vespa/searchlib/attribute/postinglistsearchcontext.hpp b/searchlib/src/vespa/searchlib/attribute/postinglistsearchcontext.hpp
index bd1cc1191a7..b466f8189f1 100644
--- a/searchlib/src/vespa/searchlib/attribute/postinglistsearchcontext.hpp
+++ b/searchlib/src/vespa/searchlib/attribute/postinglistsearchcontext.hpp
@@ -227,7 +227,7 @@ template <typename DataT>
 unsigned int
 PostingListSearchContextT<DataT>::approximateHits() const
 {
-    unsigned int numHits = 0;
+    size_t numHits = 0;
     if (_uniqueValues == 0u) {
     } else if (_uniqueValues == 1u) {
         numHits = singleHits();
@@ -249,7 +249,7 @@ PostingListSearchContextT<DataT>::approximateHits() const
             numHits = countHits();
         }
     }
-    return numHits;
+    return std::min(numHits, size_t(std::numeric_limits<uint32_t>::max()));
 }