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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang-formatter incorrectly breaks the line for constexpr lambda call initializing a variable"
href="https://bugs.llvm.org/show_bug.cgi?id=47545">47545</a>
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<th>Summary</th>
<td>clang-formatter incorrectly breaks the line for constexpr lambda call initializing a variable
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>10.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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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
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<th>Component</th>
<td>Formatter
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>andrei@ethereum.org
</td>
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<th>CC</th>
<td>djasper@google.com, klimek@google.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>$ clang-format --version
Ubuntu clang-format version
10.0.1-++20200708123514+ef32c611aa2-1~exp1~20200707224111.189
The code that initializes a variable using curly braces and a call to inline
_constexpr_ lambda is formatted incorrectly:
$ echo "int i{[]() constexpr noexcept { std::cout << "hello"; return 1; }()};"
| clang-format
int i{[]() constexpr noexcept {std::cout << hello;
return 1;
}
()
}
;
Removing constexpr specifier results in a valid-looking format:
$ echo "int i{[]() noexcept { std::cout << "hello"; return 1; }()};" |
clang-format
int i{[]() noexcept {
std::cout << hello;
return 1;
}()};
Workaround: adding more parentheses around lambda definition also helps:
$ echo "int i{([]() constexpr noexcept { std::cout << "hello"; return 1;
})()};" | clang-format
int i{([]() constexpr noexcept {
std::cout << hello;
return 1;
})()};</pre>
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