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<body><span class="vcard"><a class="email" href="mailto:vedran@miletic.net" title="Vedran Miletić <vedran@miletic.net>"> <span class="fn">Vedran Miletić</span></a>
</span> changed
<a class="bz_bug_link
bz_status_NEW "
title="NEW - Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97917">bug 97917</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Blocks</td>
<td>
</td>
<td>77449
</td>
</tr>
<tr>
<td style="text-align:right;">Keywords</td>
<td>
</td>
<td>regression
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97917#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Talos Principle gives Assertion `!NodePtr->isKnownSentinel()' failed"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97917">bug 97917</a>
from <span class="vcard"><a class="email" href="mailto:vedran@miletic.net" title="Vedran Miletić <vedran@miletic.net>"> <span class="fn">Vedran Miletić</span></a>
</span></b>
<pre>6037e199c8a061b2e9cb22c434644a0eac659fb9 is the first bad commit
commit 6037e199c8a061b2e9cb22c434644a0eac659fb9
Author: Duncan P. N. Exon Smith <<a href="mailto:dexonsmith@apple.com">dexonsmith@apple.com</a>>
Date: Sun Sep 11 16:38:18 2016 +0000
CodeGen: Turn on sentinel tracking for MachineInstr iterators
This is a prep commit before fixing MachineBasicBlock::reverse_iterator
invalidation semantics, ala r281167 for ilist::reverse_iterator. This
changes MachineBasicBlock::Instructions to track which node is the
sentinel regardless of LLVM_ENABLE_ABI_BREAKING_CHECKS.
There's almost no functionality change (aside from ABI). However, in
the rare configuration:
#if !defined(NDEBUG) && !defined(LLVM_ENABLE_ABI_BREAKING_CHECKS)
the isKnownSentinel() assertions in ilist_iterator<>::operator* suddenly
have teeth for MachineInstr. If these assertions start firing for your
out-of-tree backend, have a look at the suggestions in the commit
message for r279314, and at some of the commits leading up to it that
avoid dereferencing the end() iterator.
git-svn-id: <a href="https://llvm.org/svn/llvm-project/llvm/trunk@281168">https://llvm.org/svn/llvm-project/llvm/trunk@281168</a>
91177308-0d34-0410-b5e6-96231b3b80d8</pre>
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<b>Referenced Bugs:</b>
<ul>
<li>
[<a class="bz_bug_link
bz_status_NEW "
title="NEW - Tracker bug for all bugs related to Steam titles"
href="https://bugs.freedesktop.org/show_bug.cgi?id=77449">Bug 77449</a>] Tracker bug for all bugs related to Steam titles
</li>
</ul>
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