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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Crash on coroutines builtins"
href="https://bugs.llvm.org/show_bug.cgi?id=33998">33998</a>
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<th>Summary</th>
<td>Crash on coroutines builtins
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>seth.cantrell@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>A source file containing the below sequence of tokens causes clang to crash
when compiling using the flags "-std=c++2a -O0 -fcoroutines-ts". Crash in
Godbolt's compiler explorer: <a href="https://godbolt.org/g/yKHPDH">https://godbolt.org/g/yKHPDH</a>
alignas(16) unsigned char preallocated[1024];
void f() {
void *builtin_id_return = __builtin_coro_id(16, &preallocated, nullptr,
nullptr);
void *frame = __builtin_coro_begin(builtin_id_return);
}</pre>
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</p>
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