From 4cf9e0000cf1eb7a7fa36c3a09b26c0c828fdc94 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Mon, 15 Jan 2024 16:44:25 +0100
Subject: fix #8089

---
 src/lib/exchange_api_batch_withdraw2.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/lib/exchange_api_batch_withdraw2.c')

diff --git a/src/lib/exchange_api_batch_withdraw2.c b/src/lib/exchange_api_batch_withdraw2.c
index 453d8a0ab..a512fed14 100644
--- a/src/lib/exchange_api_batch_withdraw2.c
+++ b/src/lib/exchange_api_batch_withdraw2.c
@@ -103,11 +103,12 @@ static enum GNUNET_GenericReturnValue
 reserve_batch_withdraw_ok (struct TALER_EXCHANGE_BatchWithdraw2Handle *wh,
                            const json_t *json)
 {
-  struct TALER_BlindedDenominationSignature blind_sigs[wh->num_coins];
+  struct TALER_BlindedDenominationSignature blind_sigs[GNUNET_NZL (
+                                                         wh->num_coins)];
   const json_t *ja = json_object_get (json,
                                       "ev_sigs");
   const json_t *j;
-  unsigned int index;
+  size_t index;
   struct TALER_EXCHANGE_BatchWithdraw2Response bwr = {
     .hr.reply = json,
     .hr.http_status = MHD_HTTP_OK
@@ -134,7 +135,7 @@ reserve_batch_withdraw_ok (struct TALER_EXCHANGE_BatchWithdraw2Handle *wh,
                            NULL, NULL))
     {
       GNUNET_break_op (0);
-      for (unsigned int i = 0; i<index; i++)
+      for (size_t i = 0; i<index; i++)
         TALER_blinded_denom_sig_free (&blind_sigs[i]);
       return GNUNET_SYSERR;
     }
-- 
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