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<body><span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Assert-on-valid: "temporary created multiple times""
href="https://bugs.llvm.org/show_bug.cgi?id=32034">bug 32034</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
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<tr>
<td style="text-align:right;">Status</td>
<td>NEW
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<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Assert-on-valid: "temporary created multiple times""
href="https://bugs.llvm.org/show_bug.cgi?id=32034#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Assert-on-valid: "temporary created multiple times""
href="https://bugs.llvm.org/show_bug.cgi?id=32034">bug 32034</a>
from <span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span></b>
<pre>This was broken before the constexpr if changes; it's failing now due to a
change in stack layout. The problem is that AtomicExprEvaluator does this:
bool ZeroInitialization(const Expr *E) {
ImplicitValueInitExpr VIE(
E->getType()->castAs<AtomicType>()->getValueType());
return Evaluate(Result, Info, &VIE);
}
... but Evaluate uses the Expr* as a key in a map when it's creating a class
temporary. Somewhat more reduced testcase:
struct B {};
struct C { _Atomic(B) c; };
constexpr int n = (C(), C(), 0);
Fixed by r295886.</pre>
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