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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Class template argument deduction with deduced type fails when accessing member"
href="https://bugs.llvm.org/show_bug.cgi?id=39663">39663</a>
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<th>Summary</th>
<td>Class template argument deduction with deduced type fails when accessing member
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>7.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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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>C++'17
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>bmburstein@gmail.com
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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>Try to compile the following c++ program:
template <class T>
struct C {
C(T) {}
int a;
};
template <class T>
int foo(T v) {
return C{v}.a; // <----
}
int main() {
foo(4);
}
The line marked above fails with the error:
error: member reference base type 'C' is not a structure or union
return (C{v}).a;
~~~~~~^~
Note that the following all work fine:
template <class T>
C<T> foo(T v) {
return C{v};
}
and
int foo(int v) {
return C{v}.a;
}
and
C{4}.a;
I tried this also on a recent trunk build (trunk 346600)</pre>
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