From dc26c14f4cf0beb83d8eef28baf84b56c8d3ef86 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 10 Mar 2024 12:37:12 +0100
Subject: do not permit empty currency string

---
 src/util/Makefile.am | 2 +-
 src/util/amount.c    | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/util/Makefile.am b/src/util/Makefile.am
index 0edae9506..2aea6b689 100644
--- a/src/util/Makefile.am
+++ b/src/util/Makefile.am
@@ -120,7 +120,7 @@ libtalerutil_la_LIBADD = \
   -lm
 
 libtalerutil_la_LDFLAGS = \
-  -version-info 3:0:2 \
+  -version-info 3:1:2 \
   -no-undefined
 
 
diff --git a/src/util/amount.c b/src/util/amount.c
index ee50a9bca..cce84d73a 100644
--- a/src/util/amount.c
+++ b/src/util/amount.c
@@ -87,6 +87,7 @@ TALER_string_to_amount (const char *str,
   /* parse currency */
   colon = strchr (str, (int) ':');
   if ( (NULL == colon) ||
+       (colon == str) ||
        ((colon - str) >= TALER_CURRENCY_LEN) )
   {
     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
-- 
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