Varargs functions effectively bypass strong type-checking. It can’t be helped.
From: vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of wang.hu...@zte.com.cn Sent: Tuesday, September 19, 2017 11:34 PM To: vpp-dev@lists.fd.io Cc: gu.ji...@zte.com.cn; wang.ju...@zte.com.cn Subject: [vpp-dev] some issue about using unformat %u hi all: we found some common using issues about the use of CLI unformat, as follow: u16 out_port = 0; u32 vrf_id = 0, protocol; else if (unformat (line_input, "%U %u", unformat_ip4_address, &out_addr, &out_port)) when inputing u16 or u8 type param(not u32)， the local variable which behind of "out_port" in stack will be overwrited, is that right? is there some Notes about this? I think the bellow code maybe cause that issue. unformat->va_unformat->do_percent->unformat_integer-> *(u32 *) v = value; 王辉 wanghui IT开发工程师 IT Development Engineer 虚拟化南京四部/无线研究院/无线产品经营部 NIV Nanjing Dept. IV/Wireless Product R＆D Institute/Wireless Product Operation Division
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