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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mstdn.io/users/wolf480pl/statuses/114003553221980912">Wolf480pl (wolf480pl@mstdn.io)'s status on Sunday, 16-Feb-2025 02:43:57 JST</a><a href="https://mstdn.io/@wolf480pl" title="wolf480pl@mstdn.io"><img src="https://gnusocial.jp/avatar/6007-48-20250211223719.webp" width="48" height="48" alt="Wolf480pl" style="position: absolute; left: 0; top: 0;">Wolf480pl</a></section><article><p>Is this UB when p is null?</p><p>int bar(struct foo *p) {<br>    int *py = &amp;p-&gt;y;<br>    if (!p) {<br>        return 0;<br>    }<br>    return *py;<br>}</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/4571962#notice-8950619">In conversation</a><time datetime="2025-02-16T02:43:57+09:00" title="Sunday, 16-Feb-2025 02:43:57 JST">about 6 days ago</time> <span>from <span><a href="https://mstdn.io/@wolf480pl/114003553221980912" rel="external" title="Sent from mstdn.io via ActivityPub">mstdn.io</a></span></span><a href="https://mstdn.io/@wolf480pl/114003553221980912">permalink</a></footer></blockquote>

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Wolf480pl (wolf480pl@mstdn.io)'s status on Sunday, 16-Feb-2025 02:43:57 JST Wolf480pl
Is this UB when p is null?
int bar(struct foo *p) {
int *py = &p->y;
if (!p) {
return 0;
}
return *py;
}
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