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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Trailing return type: *this does not bind to base class reference"
href="https://bugs.llvm.org/show_bug.cgi?id=41598">41598</a>
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<th>Summary</th>
<td>Trailing return type: *this does not bind to base class reference
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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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>treh@think-cell.com
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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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<p>
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<pre>When using *this in the decltype of a trailing return type, clang does not
consider the base class:
struct B {};
int func(B&);
struct D : B {
auto memfunc() -> decltype(func(*this));
};
compiles with gcc and msvc, but fails with clang
(<a href="https://godbolt.org/z/oBYlyt">https://godbolt.org/z/oBYlyt</a>):
<source>:5:32: error: no matching function for call to 'func'
auto memfunc() -> decltype(func(*this));
^~~~
<source>:2:5: note: candidate function not viable: cannot convert argument of
incomplete type 'D' to 'B &' for 1st argument
int func(B&);
^</pre>
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