diff options
Diffstat (limited to 'main/utils.c')
| -rw-r--r-- | main/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/main/utils.c b/main/utils.c index 3a8e85f06..edb4102e0 100644 --- a/main/utils.c +++ b/main/utils.c @@ -1199,7 +1199,7 @@ int ast_dynamic_str_thread_build_va(struct ast_dynamic_str **buf, size_t max_len struct ast_threadstorage *ts, int append, const char *fmt, va_list ap) { int res; - int offset = append ? strlen((*buf)->str) : 0; + int offset = (append && (*buf)->len) ? strlen((*buf)->str) : 0; res = vsnprintf((*buf)->str + offset, (*buf)->len - offset, fmt, ap); |