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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/1092#note_230219071">tests/buffer.c</a>:
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<td class="diff-line-num new new_line" data-linenumber="60" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC60" class="line" lang="c"> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_buffer_append_data</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">str</span><span class="p">,</span> <span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">input</span><span class="p">,</span> <span class="n" style="color: #333;">strlen</span><span class="p">(</span><span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">input</span><span class="p">));</span></span>
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<td class="diff-line-num new new_line" data-linenumber="61" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC61" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="62" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC62" class="line" lang="c"> <span class="n" style="color: #333;">fail</span><span class="p">(</span><span class="s" style="color: #d14;">"_gnutls_buffer_append_str: %s</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">,</span> <span class="n" style="color: #333;">gnutls_strerror</span><span class="p">(</span><span class="n" style="color: #333;">ret</span><span class="p">));</span></span>
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<td class="diff-line-num new new_line" data-linenumber="63" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
63
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<pre style="margin: 0;">+<span id="LC63" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="64" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC64" class="line" lang="c"> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_buffer_unescape</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">str</span><span class="p">);</span></span>
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<td class="diff-line-num new new_line" data-linenumber="65" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC65" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<td class="diff-line-num new new_line" data-linenumber="66" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC66" class="line" lang="c"> <span class="n" style="color: #333;">fail</span><span class="p">(</span><span class="s" style="color: #d14;">"_gnutls_buffer_unescape: %s</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">,</span> <span class="n" style="color: #333;">gnutls_strerror</span><span class="p">(</span><span class="n" style="color: #333;">ret</span><span class="p">));</span></span>
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<td class="diff-line-num new new_line" data-linenumber="67" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC67" class="line" lang="c"></span>
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<td class="diff-line-num new new_line" data-linenumber="68" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC68" class="line" lang="c"> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_buffer_append_data</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">str</span><span class="p">,</span> <span class="s" style="color: #d14;">""</span><span class="p">,</span> <span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
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<td class="diff-line-num new new_line" data-linenumber="69" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC69" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC70" class="line" lang="c"> <span class="n" style="color: #333;">fail</span><span class="p">(</span><span class="s" style="color: #d14;">"_gnutls_buffer_append_data: %s</span><span class="se" style="color: #d14;">\n</span><span class="s" style="color: #d14;">"</span><span class="p">,</span> <span class="n" style="color: #333;">gnutls_strerror</span><span class="p">(</span><span class="n" style="color: #333;">ret</span><span class="p">));</span></span>
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<pre style="margin: 0;">+<span id="LC71" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC72" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* using malloc() instead of stack memory for better buffer overflow detection */</span></span>
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<td class="diff-line-num new new_line" data-linenumber="73" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
73
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<pre style="margin: 0;">+<span id="LC73" class="line" lang="c"> <span class="n" style="color: #333;">output</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">gnutls_malloc</span><span class="p">(</span><span class="n" style="color: #333;">strlen</span><span class="p">(</span><span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">output</span><span class="p">)</span> <span class="o" style="font-weight: 600;">+</span> <span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
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<td class="diff-line-num new new_line" data-linenumber="74" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC74" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC75" class="line" lang="c"> <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_buffer_pop_data</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">str</span><span class="p">,</span> <span class="n" style="color: #333;">output</span><span class="p">,</span> <span class="n" style="color: #333;">strlen</span><span class="p">(</span><span class="n" style="color: #333;">t</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">output</span><span class="p">)</span> <span class="o" style="font-weight: 600;">+</span> <span class="mi" style="color: #099;">1</span><span class="p">);</span></span>
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<p dir="auto">maybe buffer_pop_datum is more flexible for use here.</p>
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