From 727eccbe644aede46ef5eafc11964992960457e0 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Thu, 23 Apr 2020 11:55:10 +0200
Subject: add invariant checks for #6214

---
 src/exchangedb/plugin_exchangedb_postgres.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/exchangedb/plugin_exchangedb_postgres.c')

diff --git a/src/exchangedb/plugin_exchangedb_postgres.c b/src/exchangedb/plugin_exchangedb_postgres.c
index 4f57f32f..e517d069 100644
--- a/src/exchangedb/plugin_exchangedb_postgres.c
+++ b/src/exchangedb/plugin_exchangedb_postgres.c
@@ -4004,6 +4004,11 @@ struct CoinHistoryContext
    * Set to 'true' if the transaction failed.
    */
   bool failed;
+
+  /**
+   * Set to 'true' if we found a deposit (for invariant check).
+   */
+  bool have_deposit;
 };
 
 
@@ -4029,6 +4034,7 @@ add_coin_deposit (void *cls,
     struct TALER_EXCHANGEDB_TransactionList *tl;
     uint64_t serial_id;
 
+    chc->have_deposit = true;
     deposit = GNUNET_new (struct TALER_EXCHANGEDB_DepositListEntry);
     {
       struct GNUNET_PQ_ResultSpec rs[] = {
@@ -4506,6 +4512,7 @@ postgres_get_coin_transactions (
   *tlp = chc.head;
   if (NULL == chc.head)
     return GNUNET_DB_STATUS_SUCCESS_NO_RESULTS;
+  GNUNET_break (chc.have_deposit);
   return GNUNET_DB_STATUS_SUCCESS_ONE_RESULT;
 }
 
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