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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - non-const lvalue reference to type is actually allowed?"
href="https://bugs.llvm.org/show_bug.cgi?id=42214">42214</a>
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<th>Summary</th>
<td>non-const lvalue reference to type is actually allowed?
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>zhonghao@pku.org.cn
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>My clang is 9.0.0, and the code is:
template<class ...V>
struct VariableList {
void ConnectAllToAll(VariableList<>& params = VariableList<>()) {
}
};
clang rejects it:
<source>:3:39: error: non-const lvalue reference to type 'VariableList<>'
cannot bind to a temporary of type 'VariableList<>'
void ConnectAllToAll(VariableList<>& params = VariableList<>()) {
^ ~~~~~~~~~~~~~~~~
<source>:3:39: note: passing argument to parameter 'params' here
1 error generated.
Compiler returned: 1
However, icc, gcc, and msvc all accept the code. non-const lvalue reference to
type is actually allowed?</pre>
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