Merge pull request #10892

7507aed wallet2: guard gamma picker against zero-output windows (selsta)

ACKs: tobtoht

src/wallet/wallet2.cpp

@@ -1048,6 +1048,7 @@ gamma_picker::gamma_picker(const std::vector<uint64_t> &rct_offsets, double shap
   end = rct_offsets.data() + rct_offsets.size() - (std::max(1, CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE) - 1);
   num_rct_outputs = *(end - 1);
   THROW_WALLET_EXCEPTION_IF(num_rct_outputs == 0, error::wallet_internal_error, "No rct outputs");
+  THROW_WALLET_EXCEPTION_IF(outputs_to_consider == 0, error::wallet_internal_error, "No outputs in consideration window");
   average_output_time = DIFFICULTY_TARGET_V2 * blocks_to_consider / static_cast<double>(outputs_to_consider); // this assumes constant target over the whole rct range
 };