It would be confusing to have multiple default machines. Abort if this ever occurs.
Signed-off-by: Philippe Mathieu-Daudé <[email protected]> --- v2: Use assert() instead of human friendly message (Marc-André) Cc: Marc-André Lureau <[email protected]> Cc: Laurent Vivier <[email protected]> --- vl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/vl.c b/vl.c index 7dcb0879c4..b3e0f7af25 100644 --- a/vl.c +++ b/vl.c @@ -2354,6 +2354,8 @@ static MachineClass *machine_parse(const char *name, GSList *machines) GSList *el; if (is_help_option(name)) { + int default_count = 0; + printf("Supported machines are:\n"); machines = g_slist_sort(machines, machine_class_cmp); for (el = machines; el; el = el->next) { @@ -2364,7 +2366,9 @@ static MachineClass *machine_parse(const char *name, GSList *machines) printf("%-20s %s%s%s\n", mc->name, mc->desc, mc->is_default ? " (default)" : "", mc->deprecation_reason ? " (deprecated)" : ""); + default_count += !!mc->is_default; } + assert(default_count <= 1); exit(0); } -- 2.21.1
