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-rw-r--r--ta/ta_utils.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/ta/ta_utils.c b/ta/ta_utils.c
index 80a42bb16d..860a96436d 100644
--- a/ta/ta_utils.c
+++ b/ta/ta_utils.c
@@ -106,7 +106,9 @@ static bool strndup_append_at(char **str, size_t at, const char *append,
*str = t;
}
- memcpy(*str + at, append, append_len);
+ if (append_len)
+ memcpy(*str + at, append, append_len);
+
(*str)[at + append_len] = '\0';
ta_dbg_mark_as_string(*str);