Handle case of no concatenations.

AztecProtocol · Oct 31, 2023 · c6ddf92 · c6ddf92
1 parent 7c68cce
commit c6ddf92
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/barretenberg/cpp/src/barretenberg/honk/pcs/zeromorph/zeromorph.hpp b/barretenberg/cpp/src/barretenberg/honk/pcs/zeromorph/zeromorph.hpp
@@ -357,7 +357,7 @@ template <typename Curve> class ZeroMorphProver_ {
         };
 
         size_t num_groups = concatenation_groups.size();
-        size_t num_chunks_per_group = concatenation_groups[0].size();
+        size_t num_chunks_per_group = concatenation_groups.empty() ? 0 : concatenation_groups[0].size();
         // Concatenated polynomials
         // std::vector<Polynomial> concatenated_polynomials;
         Polynomial concatenated_batched(N);