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From: 847567161 <847567161@qq.com>
To: musl <musl@lists.openwall.com>
Subject: [musl] Question: Why vfprintf call twice printf_core?
Date: Sat, 6 May 2023 11:29:36 +0800	[thread overview]
Message-ID: <tencent_78DED1C65E5C5DF08830E6F3251C6BFC4F06@qq.com> (raw)

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Hello,
    I'm analyzing vfprintf performance, I don't know why musl call "printf_core(0, fmt, &amp;ap2, nl_arg, nl_type)" here. Could you tell me the reason?https://gitee.com/openharmony/third_party_musl/blob/master/src/stdio/vfprintf.c#L668More info:    I use gdb to debug vfprintf , I found it return directly when calling printf_core firstly which file parameter is 0.https://gitee.com/openharmony/third_party_musl/blob/master/src/stdio/vfprintf.c#L526Best Regards Chuang Yin

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             reply	other threads:[~2023-05-06  3:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-06  3:29 847567161 [this message]
2023-05-06  3:53 ` Markus Wichmann
2023-05-06  5:24   ` =?gb18030?B?ODQ3NTY3MTYx?=
2023-05-06  6:25     ` Markus Wichmann
2023-05-06 17:55       ` NRK
2023-05-07  1:17       ` Rich Felker
2023-05-07  1:44         ` [musl] =?gb18030?B?u9i4tKO6IFttdXNsXSBRdWVzdGlvbjogV2h5IHZmcHJpbnRmIGNhbGwgdHdpY2UgcHJpbnRmX2NvcmU/?= =?gb18030?B?ODQ3NTY3MTYx?=

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