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由 Fam Zheng 提交于
This prints an error message, instead of core dump, when "-qtest" option value is invalid, e.g.: $ ./x86_64-softmmu/qemu-system-x86_64 -qtest unknown qemu-system-x86_64: Failed to initialize device for qtest: "unknown" Signed-off-by: NFam Zheng <famz@redhat.com> Signed-off-by: NAndreas Färber <afaerber@suse.de>
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