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qemu-option: Fix qemu_opts_find() for null id arguments 

Crashes when the first list member has an ID.  Admittedly nonsensical
reproducer:

$ qemu-system-x86_64 -nodefaults -machine id=foo -machine ""

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1372943363-24081-2-git-send-email-armbru@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Markus Armbruster 2013-07-04 15:09:17 +02:00 committed by Anthony Liguori
parent 154bb106dc
commit 96bc97ebf3
1 changed files with 4 additions and 8 deletions
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12
util/qemu-option.c
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@ -706,16 +706,12 @@ QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id)
QemuOpts *opts;
QTAILQ_FOREACH(opts, &list->head, next) {
if (!opts->id) {
if (!id) {
return opts;
}
continue;
if (!opts->id && !id) {
return opts;
}
if (strcmp(opts->id, id) != 0) {
continue;
if (opts->id && id && !strcmp(opts->id, id)) {
return opts;
}
return opts;
}
return NULL;
}