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<a href="https://gitlab.com/karlson2k">Evgeny Grin</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/commit/bfd453f39cb6126e561000a711264b2535eefc36#note_743737231">lib/system/sockets.c</a>:
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<pre style="margin: 0;"> <span id="LC79" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC80" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">send</span><span class="p">(</span><span class="n" style="color: #333;">GNUTLS_POINTER_TO_INT</span><span class="p">(</span><span class="n" style="color: #333;">ptr</span><span class="p">),</span> <span class="n" style="color: #333;">data</span><span class="p">,</span> <span class="n" style="color: #333;">data_size</span><span class="p">,</span> <span class="mi" style="color: #099;">0</span><span class="p">);</span></span>
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<pre style="margin: 0;"> <span id="LC81" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC82" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC83" class="line" lang="c"><span class="kt" style="color: #458; font-weight: 600;">ssize_t</span></span>
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<pre style="margin: 0;">+<span id="LC84" class="line" lang="c"><span class="nf" style="color: #900; font-weight: 600;">system_writev</span><span class="p">(</span><span class="n" style="color: #333;">gnutls_transport_ptr_t</span> <span class="n" style="color: #333;">ptr</span><span class="p">,</span> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">giovec_t</span> <span class="o" style="font-weight: 600;">*</span> <span class="n" style="color: #333;">iovec</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC85" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">iovec_cnt</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC86" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC87" class="line" lang="c"> <span class="n" style="color: #333;">WSABUF</span> <span class="n" style="color: #333;">bufs</span><span class="p">[</span><span class="n" style="color: #333;">iovec_cnt</span><span class="p">];</span></span>
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<p dir="auto">Maybe a better solution would be small fixed size + malloced version for large size? This way we can avoid stack overflow in special cases.</p>
<p dir="auto"><code>alloc()</code> on Windows has some limitations: <a href="https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/alloca?view=msvc-170" rel="nofollow noreferrer noopener" target="_blank">https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/alloca?view=msvc-170</a></p>
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