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<body><span class="vcard"><a class="email" href="mailto:currojerez@riseup.net" title="Francisco Jerez <currojerez@riseup.net>"> <span class="fn">Francisco Jerez</span></a>
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<a class="bz_bug_link
bz_status_NEW "
title="NEW - compiler/test_eu_compact failure with GCC 8"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105052">bug 105052</a>
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<td>currojerez@riseup.net
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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - compiler/test_eu_compact failure with GCC 8"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105052#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - compiler/test_eu_compact failure with GCC 8"
href="https://bugs.freedesktop.org/show_bug.cgi?id=105052">bug 105052</a>
from <span class="vcard"><a class="email" href="mailto:currojerez@riseup.net" title="Francisco Jerez <currojerez@riseup.net>"> <span class="fn">Francisco Jerez</span></a>
</span></b>
<pre>Created <span class=""><a href="attachment.cgi?id=137473" name="attach_137473" title="0001-intel-ir-Fix-invalid-type-aliasing-with-undefined-be.patch">attachment 137473</a> <a href="attachment.cgi?id=137473&action=edit" title="0001-intel-ir-Fix-invalid-type-aliasing-with-undefined-be.patch">[details]</a></span> <a href='page.cgi?id=splinter.html&bug=105052&attachment=137473'>[review]</a>
0001-intel-ir-Fix-invalid-type-aliasing-with-undefined-be.patch
Does it go away with the attached patch? I had it in a branch that was making
some unrelated changes which just happened to affect the order instructions are
emitted by GCC in the test_fuzz_compact_instruction() function, causing the bit
twiddling to be done after the clear_pad_bits() call which modifies the same
data through a pointer of different type, leading to undefined behavior. I had
seen this happen on GCC 7.</pre>
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