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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 - [feature request] requires clause in functions (concepts TS)"
href="https://bugs.llvm.org/show_bug.cgi?id=32166">32166</a>
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<th>Summary</th>
<td>[feature request] requires clause in functions (concepts TS)
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>Formatter
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>gonzalobg88@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>djasper@google.com, klimek@google.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>This code
template <bool IsConst>
struct A {
void prev()
requires BidirectionalIterator<iterator_t<IsConst>>() &&
BidirectionalIterator<iterator_t<IsConst>>() &&
BidirectionalIterator<iterator_t<IsConst>>()
{ --it_; }
};
gets formatted into:
template <bool IsConst>
struct A {
void prev() requires BidirectionalIterator<iterator_t<IsConst>>() &&
BidirectionalIterator<iterator_t<IsConst>>() &&
BidirectionalIterator<iterator_t<IsConst>>() {
--it_;
}
};
I don't see a reason why the options specified in #32165 shouldn't apply here
as well.
Also:
<a href="https://github.com/CaseyCarter/cmcstl2/blob/43b63f6846d80bcd1867f512519bc18841bd961e/include/stl2/detail/iterator/operations.hpp#L25">https://github.com/CaseyCarter/cmcstl2/blob/43b63f6846d80bcd1867f512519bc18841bd961e/include/stl2/detail/iterator/operations.hpp#L25</a>
this code:
template <class I>
requires
Iterator<I>()
// Pre: 0 <= n && [i,i+n)
constexpr void impl(I& i, difference_type_t<I> n)
noexcept(noexcept(++std::declval<I&>()))
{
STL2_EXPECT(0 <= n);
while (n != 0) {
--n;
++i;
}
}
gets formatted into
template <class I>
requires Iterator<I>()
// Pre: 0 <= n && [i,i+n)
constexpr void impl(I& i, difference_type_t<I> n) noexcept(
noexcept(++std::declval<I&>())) {
STL2_EXPECT(0 <= n);
while (n != 0) {
--n;
++i;
}
}
(Note how the constexpr keywords is not aligned with the template keyword).</pre>
</div>
</p>
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