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<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/1002#note_172463387">lib/datum.c</a>:
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<pre style="margin: 0;"> <span id="LC40" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<pre style="margin: 0;"> <span id="LC41" class="line" lang="c"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC42" class="line" lang="c"></span>
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<pre style="margin: 0;">-<span id="LC42" class="line" lang="c"> <span class="n" style="color: #333;">dat</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">data</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;">data_size</span><span class="p">);</span></span>
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<p dir="auto">It may be in general but in this particular case it looks like a safety feature. Both of these functions are initialization functions, and for code like:</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true" style="background-color: #fff; font-family: monospace; font-size: 90%; -premailer-cellpadding: 0; -premailer-cellspacing: 0; -premailer-width: 100%; margin: 0;"><code><span id="LC1" class="line" lang="plaintext">_gnutls_set_datum(x, "y", 1);</span>
<span id="LC2" class="line" lang="plaintext">printf("%s", x.data);</span></code></pre>
<p dir="auto">when allocation fails, they will prevent an uninitialized x.data to be passed to printf().</p>
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