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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Cannot aggregate initialize with C++17 *this lambda capture"
href="https://bugs.llvm.org/show_bug.cgi?id=42778">42778</a>
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<th>Summary</th>
<td>Cannot aggregate initialize with C++17 *this lambda capture
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++17
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>romain.geissler@amadeus.com
</td>
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>Hi,
The following snippet triggers a compiler error with -std=gnu++17:
<<END_OF_FILE
#include <functional>
struct A
{
std::function<void()> function;
void f() {};
};
struct B
{
void f()
{
A{[*this](){}}.f();
}
};
END_OF_FILE
It fails with:
<source>:14:18: warning: use of GNU 'missing =' extension in designator
[-Wgnu-designator]
A{[*this](){}}.f();
^
=
<source>:14:19: error: expected expression
A{[*this](){}}.f();
^
<source>:14:12: error: integral constant expression must have integral or
unscoped enumeration type, not 'B'
A{[*this](){}}.f();
^~~~~
1 warning and 2 errors generated.
Compiler returned: 1
tested with clang 8, 9 and current HEAD: <a href="https://godbolt.org/z/gVhxD3">https://godbolt.org/z/gVhxD3</a> Gcc 9 is
happy with that.</pre>
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