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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Assertion with -Wconsumed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!""
href="http://llvm.org/bugs/show_bug.cgi?id=17632">17632</a>
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<th>Summary</th>
<td>Assertion with -Wconsumed: isa<X>(Val) && "cast<Ty>() argument of incompatible type!"
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jonathan.sauer@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11397" name="attach_11397" title="Complete log of clang run">attachment 11397</a> <a href="attachment.cgi?id=11397&action=edit" title="Complete log of clang run">[details]</a></span>
Complete log of clang run
The following code crashes clang r193073 when compiled with -Wconsumed:
template <typename String_>
struct Foo {
explicit Foo(String_) {}
};
int main()
{
const char* bar = "bar";
Foo<const char*&> foo(bar);
}
This results in (full log attached):
% ~/LLVM/build/Release+Asserts/bin/clang++ -Wconsumed clang.cpp
Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"),
function cast, file /Users/rynnsauer/LLVM/llvm/include/llvm/Support/Casting.h,
line 232.
[...]
clang::consumed::ConsumedStmtVisitor::VisitParmVarDecl(clang::ParmVarDecl
const*) + 702
The code compiles successfully with clang r192096. It also compiles
successfully with r193073 when not passing -Wconsumed.
It also compiles successfully with r193073 when making Foo's template parameter
a non-reference type:
template <typename String_>
struct Foo {
explicit Foo(String_) {}
};
int main()
{
const char* bar = "bar";
Foo<const char*> foo(bar);
// ^ removed '&'
}</pre>
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