From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qv1-xf2c.google.com (mail-qv1-xf2c.google.com [IPv6:2607:f8b0:4864:20::f2c]) by sourceware.org (Postfix) with ESMTPS id 7FAEA3857C7B for ; Tue, 20 Oct 2020 13:30:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 7FAEA3857C7B Received: by mail-qv1-xf2c.google.com with SMTP id h11so844770qvq.7 for ; Tue, 20 Oct 2020 06:30:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:references:from:autocrypt:subject :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=3eR9NNqwrwRB7p8Oc0W49dBC8PqZZ6Un383HdkHHPao=; b=GQIGXpp6/lpl4dHx3H2NoYopGqL0hkkOafmk36jB/Htg09VEvfL9kd0a403RoD7TH4 GPR770ozK2jRyvSNeTrUPX1juXVJ7Fax67fRPrf5wPTy+hMinHcPdvbFB7ghMQw/hGyt LajrsxX97IL8nSUJb19Ha0tNOijpe5lwXBvmrNi9v5OCG4GAqNXKrjzHTm5qYhfac49H 0pHLGJyrkFsluVVnK4PokYrLiWs7X+mRae/p/GABvMJVf9E4GpnIMjYa3ALjMiTfF7ca Z2hui1kHfFP94KVMKw6gND8ATSemkcvKmF3L2yi4zxqzWB36pP9FGdQgUyJIG2Dz1Lkq 6Q5Q== X-Gm-Message-State: AOAM532Z6rn61Eiasrrsw/NR9/49kvZ5JL5RZds6B2NbV6Z1YTqu+LoK hOtJrLJvUethrHAKsgztidPA+A== X-Google-Smtp-Source: ABdhPJwZ/cIBDzXPaS+OKsuOClP5WYxwC8Ukryx9Lpo3NcPl9eBagi11TG+YtUDsTwTaIX1l7qlUVQ== X-Received: by 2002:ad4:59cf:: with SMTP id el15mr3311168qvb.17.1603200646883; Tue, 20 Oct 2020 06:30:46 -0700 (PDT) Received: from [192.168.1.4] ([177.194.48.209]) by smtp.googlemail.com with ESMTPSA id t8sm709038qtb.97.2020.10.20.06.30.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 20 Oct 2020 06:30:46 -0700 (PDT) To: Florian Weimer , Adhemerval Zanella via Libc-help References: <87sga95u39.fsf@oldenburg2.str.redhat.com> From: Adhemerval Zanella Autocrypt: addr=adhemerval.zanella@linaro.org; prefer-encrypt=mutual; keydata= mQINBFcVGkoBEADiQU2x/cBBmAVf5C2d1xgz6zCnlCefbqaflUBw4hB/bEME40QsrVzWZ5Nq 8kxkEczZzAOKkkvv4pRVLlLn/zDtFXhlcvQRJ3yFMGqzBjofucOrmdYkOGo0uCaoJKPT186L NWp53SACXguFJpnw4ODI64ziInzXQs/rUJqrFoVIlrPDmNv/LUv1OVPKz20ETjgfpg8MNwG6 iMizMefCl+RbtXbIEZ3TE/IaDT/jcOirjv96lBKrc/pAL0h/O71Kwbbp43fimW80GhjiaN2y WGByepnkAVP7FyNarhdDpJhoDmUk9yfwNuIuESaCQtfd3vgKKuo6grcKZ8bHy7IXX1XJj2X/ BgRVhVgMHAnDPFIkXtP+SiarkUaLjGzCz7XkUn4XAGDskBNfbizFqYUQCaL2FdbW3DeZqNIa nSzKAZK7Dm9+0VVSRZXP89w71Y7JUV56xL/PlOE+YKKFdEw+gQjQi0e+DZILAtFjJLoCrkEX w4LluMhYX/X8XP6/C3xW0yOZhvHYyn72sV4yJ1uyc/qz3OY32CRy+bwPzAMAkhdwcORA3JPb kPTlimhQqVgvca8m+MQ/JFZ6D+K7QPyvEv7bQ7M+IzFmTkOCwCJ3xqOD6GjX3aphk8Sr0dq3 4Awlf5xFDAG8dn8Uuutb7naGBd/fEv6t8dfkNyzj6yvc4jpVxwARAQABtElBZGhlbWVydmFs IFphbmVsbGEgTmV0dG8gKExpbmFybyBWUE4gS2V5KSA8YWRoZW1lcnZhbC56YW5lbGxhQGxp bmFyby5vcmc+iQI3BBMBCAAhBQJXFRpKAhsDBQsJCAcDBRUKCQgLBRYCAwEAAh4BAheAAAoJ EKqx7BSnlIjv0e8P/1YOYoNkvJ+AJcNUaM5a2SA9oAKjSJ/M/EN4Id5Ow41ZJS4lUA0apSXW NjQg3VeVc2RiHab2LIB4MxdJhaWTuzfLkYnBeoy4u6njYcaoSwf3g9dSsvsl3mhtuzm6aXFH /Qsauav77enJh99tI4T+58rp0EuLhDsQbnBic/ukYNv7sQV8dy9KxA54yLnYUFqH6pfH8Lly sTVAMyi5Fg5O5/hVV+Z0Kpr+ZocC1YFJkTsNLAW5EIYSP9ftniqaVsim7MNmodv/zqK0IyDB GLLH1kjhvb5+6ySGlWbMTomt/or/uvMgulz0bRS+LUyOmlfXDdT+t38VPKBBVwFMarNuREU2 69M3a3jdTfScboDd2ck1u7l+QbaGoHZQ8ZNUrzgObltjohiIsazqkgYDQzXIMrD9H19E+8fw kCNUlXxjEgH/Kg8DlpoYJXSJCX0fjMWfXywL6ZXc2xyG/hbl5hvsLNmqDpLpc1CfKcA0BkK+ k8R57fr91mTCppSwwKJYO9T+8J+o4ho/CJnK/jBy1pWKMYJPvvrpdBCWq3MfzVpXYdahRKHI ypk8m4QlRlbOXWJ3TDd/SKNfSSrWgwRSg7XCjSlR7PNzNFXTULLB34sZhjrN6Q8NQZsZnMNs TX8nlGOVrKolnQPjKCLwCyu8PhllU8OwbSMKskcD1PSkG6h3r0AquQINBFcVGkoBEACgAdbR Ck+fsfOVwT8zowMiL3l9a2DP3Eeak23ifdZG+8Avb/SImpv0UMSbRfnw/N81IWwlbjkjbGTu oT37iZHLRwYUFmA8fZX0wNDNKQUUTjN6XalJmvhdz9l71H3WnE0wneEM5ahu5V1L1utUWTyh VUwzX1lwJeV3vyrNgI1kYOaeuNVvq7npNR6t6XxEpqPsNc6O77I12XELic2+36YibyqlTJIQ V1SZEbIy26AbC2zH9WqaKyGyQnr/IPbTJ2Lv0dM3RaXoVf+CeK7gB2B+w1hZummD21c1Laua +VIMPCUQ+EM8W9EtX+0iJXxI+wsztLT6vltQcm+5Q7tY+HFUucizJkAOAz98YFucwKefbkTp eKvCfCwiM1bGatZEFFKIlvJ2QNMQNiUrqJBlW9nZp/k7pbG3oStOjvawD9ZbP9e0fnlWJIsj 6c7pX354Yi7kxIk/6gREidHLLqEb/otuwt1aoMPg97iUgDV5mlNef77lWE8vxmlY0FBWIXuZ yv0XYxf1WF6dRizwFFbxvUZzIJp3spAao7jLsQj1DbD2s5+S1BW09A0mI/1DjB6EhNN+4bDB SJCOv/ReK3tFJXuj/HbyDrOdoMt8aIFbe7YFLEExHpSk+HgN05Lg5TyTro8oW7TSMTk+8a5M kzaH4UGXTTBDP/g5cfL3RFPl79ubXwARAQABiQIfBBgBCAAJBQJXFRpKAhsMAAoJEKqx7BSn lIjvI/8P/jg0jl4Tbvg3B5kT6PxJOXHYu9OoyaHLcay6Cd+ZrOd1VQQCbOcgLFbf4Yr+rE9l mYsY67AUgq2QKmVVbn9pjvGsEaz8UmfDnz5epUhDxC6yRRvY4hreMXZhPZ1pbMa6A0a/WOSt AgFj5V6Z4dXGTM/lNManr0HjXxbUYv2WfbNt3/07Db9T+GZkpUotC6iknsTA4rJi6u2ls0W9 1UIvW4o01vb4nZRCj4rni0g6eWoQCGoVDk/xFfy7ZliR5B+3Z3EWRJcQskip/QAHjbLa3pml xAZ484fVxgeESOoaeC9TiBIp0NfH8akWOI0HpBCiBD5xaCTvR7ujUWMvhsX2n881r/hNlR9g fcE6q00qHSPAEgGr1bnFv74/1vbKtjeXLCcRKk3Ulw0bY1OoDxWQr86T2fZGJ/HIZuVVBf3+ gaYJF92GXFynHnea14nFFuFgOni0Mi1zDxYH/8yGGBXvo14KWd8JOW0NJPaCDFJkdS5hu0VY 7vJwKcyHJGxsCLU+Et0mryX8qZwqibJIzu7kUJQdQDljbRPDFd/xmGUFCQiQAncSilYOcxNU EMVCXPAQTteqkvA+gNqSaK1NM9tY0eQ4iJpo+aoX8HAcn4sZzt2pfUB9vQMTBJ2d4+m/qO6+ cFTAceXmIoFsN8+gFN3i8Is3u12u8xGudcBPvpoy4OoG Subject: Re: Is there a way to use vsnprintf_l? Would it possibly be considered for an addition one day, if missing? Message-ID: <97ee03c7-29a7-e0a4-2aa2-462efbc494f0@linaro.org> Date: Tue, 20 Oct 2020 10:30:43 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <87sga95u39.fsf@oldenburg2.str.redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-help@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-help mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 20 Oct 2020 13:30:49 -0000 On 20/10/2020 02:45, Florian Weimer wrote: > * Adhemerval Zanella via Libc-help: > >> If the idea is to provide a concise support for printf_l family function, >> I think we should add not only snprintf_l or vsnprintf_l, but rather all the >> stdio functions for both printf *and* scanf along with the wchar_t family >> as well. It means to add support for: >> >> int fprintf_l (FILE *, locale_t, const char *, ...) >> int fscanf_l (FILE * , locale_t, const char *, ...) >> int printf_l (locale_t, const char *, ...) >> int scanf_l (locale_t, const char *, ...) >> int sprintf_l (char *, locale_t, const char * , ...) >> int sscanf_l (const char *, locale_t, const char * , ...) >> int vfprintf_l (FILE *, locale_t, const char * , __va_list) >> int vprintf_l (locale_t, const char *, __va_list) >> int vsprintf_l (char * , locale_t, const char *, __va_list); >> int snprintf_l (char *, size_t, locale_t, const char * , ...) >> int vfscanf_l (FILE * , locale_t, const char * , __va_list) >> int vscanf_l (locale_t, const char *, __va_list) >> int vsnprintf_l (char *, size_t, locale_t, const char *, va_list) >> int vsscanf_l (const char *, locale_t, const char *, va_list); >> int dprintf_l (int, locale_t, const char *, ...) >> int vdprintf_l (int, locale_t, const char *, __va_list) >> int asprintf_l (char **, locale_t, const char *, ...) >> int vasprintf_l (char **, locale_t, const char *, __va_list) >> >> int fwprintf_l (FILE *, locale_t, const wchar_t *, ...) >> int fwscanf_l (FILE * , locale_t, const wchar_t *, ...) >> int wprintf_l (locale_t, const wchar_t *, ...) >> int wscanf_l (locale_t, const wchar_t *, ...) >> int wsprintf_l (char *, locale_t, const wchar_t * , ...) >> int swscanf_l (const char *, locale_t, const wchar_t * , ...) >> int vfwprintf_l (FILE *, locale_t, const wchar_t * , __va_list) >> int vwprintf_l (locale_t, const wchar_t *, __va_list) >> int vswprintf_l (wchar_t * , locale_t, const wchar_t *, __va_list); >> int snwprintf_l (wchar_t *, size_t, locale_t, const wchar_t * , ...) >> int vfwscanf_l (FILE * , locale_t, const wchar_t * , __va_list) >> int vwscanf_l (locale_t, const char *, __va_list) >> int vsnwprintf_l (wchar_t *, size_t, locale_t, const wchar_t *, va_list) >> int vswscanf_l (const wchar_t *, locale_t, const wchar_t *, va_list); >> int dwprintf_l (int, locale_t, const wchar_t *, ...) >> int vdwprintf_l (int, locale_t, const wchar_t *, __va_list) >> int aswprintf_l (wchar_t **, locale_t, const wchar_t *, ...) >> int vaswprintf_l (wchar_t **, locale_t, const wchar_t *, __va_list) > > Not sure how you generated this list. swprintf already behaves like > snprintf, so there is no need for a separate “n” variant. A > wide-character version of dprintf seems unlikely to be implemented > anytime soon. I didn't give much though to the list indeed and most likely this list will need to be revised. It was more to give the required complexity and work to provide such functionality to glibc. > > You did not list the fortify variants of these functions. Yes, this will require even more wrapper implementations. > > I would prefer to wait for standardization: it is not quite clear what > should happen if you use fwprintf_l on a wide stream that already uses a > different charset. Is this being discussed somewhere? We already have at least one implementation (not sure if MacOSX one is not the FreeBSD imported one and if Windows one does follow the expected interface). Should we block a possible implementation without proper standardization? What about a non wide set of implementations, would be feasible?