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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion failed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!""
href="https://llvm.org/bugs/show_bug.cgi?id=28503">28503</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Assertion failed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!"
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.8
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>Frontend
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jtony@ca.ibm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Steps to reproduce on linux:
-bash-4.2$ cat r.cpp
template <class ...U> struct T {
int bar() throw(U...)
{
return sizeobar...(U);
}
};
template <class ...U> auto bar(U... args) -> T<decltype(args)...>
{
return T<decltype(args)...>();
}
int main()
{
if ( bar ( bar<> ) . bar ( ) )
return 0;
}
-bash-4.2$ myclang++ r.cpp -std=c++11
r.cpp:4:10: error: use of undeclared identifier 'sizeobar'; did you mean
'sizeof'?
return sizeobar...(U);
^~~~~~~~
sizeof
clang: /home/jtony/build/3_8/llvm-dev.src/include/llvm/Support/Casting.h:237:
typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*) [wit
h X = clang::TemplateTemplateParmDecl; Y = clang::NamedDecl; typename
llvm::cast_retty<X, Y*>::ret_type = clang::TemplateTemplateParmDecl*]:
Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
0 clang 0x000000001568c4e4 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
+ 68
1 clang 0x000000001568c8d4
...
clang version 3.8.0 (tags/RELEASE_380/final)
Target: powerpc64le-unknown-linux-gnu
Thread model: posix
-bash-4.2$ type myclang
myclang is aliased to `/home/jtony/build/runnable/bin/clang'</pre>
</div>
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