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-rw-r--r--vl.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/vl.c b/vl.c
index 4e25c78bff..61305b5891 100644
--- a/vl.c
+++ b/vl.c
@@ -2466,6 +2466,7 @@ static int debugcon_parse(const char *devname)
QemuOpts *opts;
if (!qemu_chr_new_mux_mon("debugcon", devname)) {
+ error_report("invalid character backend '%s'", devname);
exit(1);
}
opts = qemu_opts_create(qemu_find_opts("device"), "debugcon", 1, NULL);