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<head>
<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Can't find pure virtual function after r285954"
href="https://llvm.org/bugs/show_bug.cgi?id=30937">30937</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Can't find pure virtual function after r285954
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dmajor@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.cpp
struct NormalizedConstraintSet
{
struct BaseRange
{
virtual void FinalizeMerge() = 0;
};
struct StringRange : public BaseRange
{
void FinalizeMerge() override {}
};
NormalizedConstraintSet();
};
NormalizedConstraintSet::NormalizedConstraintSet()
{
typedef BaseRange NormalizedConstraintSet::* MemberPtrType;
MemberPtrType list[42];
for (auto& memberPtr : list) {
(this->*memberPtr).FinalizeMerge();
}
}
int main()
{
return 0;
}
$ clang-cl test.cpp
test-24ac86.obj : error LNK2019: unresolved external symbol "public: virtual
void __cdecl NormalizedConstraintSet::BaseRange::FinalizeMerge(void)"
(?FinalizeMerge@BaseRange@NormalizedConstraintSet@@UEAAXXZ) referenced in
function "public: __cdecl
NormalizedConstraintSet::NormalizedConstraintSet(void)"
(??0NormalizedConstraintSet@@QEAA@XZ)
test.exe : fatal error LNK1120: 1 unresolved externals
clang-cl.exe: error: linker command failed with exit code 1120 (use -v to see
invocation)
(This test.cpp was reduced from the Firefox codebase. For real-world usage
please see <a href="https://dxr.mozilla.org/mozilla-central/search?q=FinalizeMerge">https://dxr.mozilla.org/mozilla-central/search?q=FinalizeMerge</a>)</pre>
</div>
</p>
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