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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - (Brace-) Copy-Initialization of lambda-member variables of class-templates fails with “error: excess elements in struct initializer”"
href="http://llvm.org/bugs/show_bug.cgi?id=22759">22759</a>
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<th>Summary</th>
<td>(Brace-) Copy-Initialization of lambda-member variables of class-templates fails with “error: excess elements in struct initializer”
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.5
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++11
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>florian.weber@sfz-bw.de
</td>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
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<pre>Compiling the following code fails with clang 3.5:
===========================
template<typename T>
struct my_class {
my_class(T arg): t{arg} {}
T t;
};
int main() {
auto lambda = []{};
my_class<decltype(lambda)>{lambda};
}
==========================
$ uname -a
Linux terra 3.14.32-1-lts #1 SMP Fri Feb 6 20:51:49 CET 2015 x86_64 GNU/Linux
$ clang++ --version
clang version 3.5.1 (tags/RELEASE_351/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
$ clang++ -std=c++11 test.cpp
test.cpp:4:21: error: excess elements in struct initializer
my_class(T arg): t{arg} {}
^~~
test.cpp:10:2: note: in instantiation of member function 'my_class<(lambda at
test.cpp:9:16)>::my_class' requested here
my_class<decltype(lambda)>{lambda};
^
1 error generated.
==========================
Since lambdas do have copy-constructors I am very positive that this code
should compile and gcc agrees with me here. Otherwise the error-message would
certainly need improvement.</pre>
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