diff options
| -rw-r--r-- | qemu-img.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/qemu-img.c b/qemu-img.c index cc51db7ed4..a2369766f0 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -229,14 +229,16 @@ static bool qemu_img_object_print_help(const char *type, QemuOpts *opts) * To make that work, @optarg must not start with ',' (or else a * separating ',' preceding it gets escaped), and it must not end with * an odd number of ',' (or else a separating ',' following it gets - * escaped). + * escaped), or be empty (or else a separating ',' preceding it can + * escape a separating ',' following it). + * */ static bool is_valid_option_list(const char *optarg) { size_t len = strlen(optarg); size_t i; - if (optarg[0] == ',') { + if (!optarg[0] || optarg[0] == ',') { return false; } |