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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Many instances of 1<<31, which is undefined in C99"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80266#c10">Comment # 10</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Many instances of 1<<31, which is undefined in C99"
href="https://bugs.freedesktop.org/show_bug.cgi?id=80266">bug 80266</a>
from <span class="vcard"><a class="email" href="mailto:baggett.patrick@gmail.com" title="Patrick Baggett <baggett.patrick@gmail.com>"> <span class="fn">Patrick Baggett</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=80266#c5">comment #5</a>)
<span class="quote">> Does gcc warn about this? Are you _sure_ that (signed int)1 << 31 is illegal
> in C99?</span >
And as tedious as this is to mention, C99 section 6.5.7.4 does state this is
undefined behavior. I know the "C abstract machine" is far removed from real
problems with drivers and whatnot -- and I appreciate the awesome work you all
do on Mesa. I just wanted to clarify that there is spec support for this claim.</pre>
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