<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - __builtin_astype doesn't work with template parameters"
href="https://bugs.llvm.org/show_bug.cgi?id=47979">47979</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>__builtin_astype doesn't work with template parameters
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>OpenCL
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>marco.antognini@arm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>anastasia.stulova@arm.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>In C++ for OpenCL, when using as_typen (e.g. as_int2) or __builtin_astype with
a template parameter, Clang crashes.
int2 foo(long x) { return as_int2(x); }
template <typename T>
auto bar(T x) {
return as_int2(x); // CRASH
return __builtin_astype(x, int2); // CRASH
return foo(x); // works
}
auto foobar(long x) { return bar(x); }
<a href="https://godbolt.org/z/W6cfEK">https://godbolt.org/z/W6cfEK</a>
The crash seems to happen in:
#5 0x0000556683bca77c clang::ASTContext::getTypeInfoImpl(clang::Type const*)
const (/opt/compiler-explorer/clang-trunk/bin/clang+++0x543d77c)
Note: as_typen is implemented in terms of __builtin_astype.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>