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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ms][dll] clang generates a COFF symbol table that differs from msvc with __declspec(dllimport)"
href="https://llvm.org/bugs/show_bug.cgi?id=26936">26936</a>
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<th>Summary</th>
<td>[ms][dll] clang generates a COFF symbol table that differs from msvc with __declspec(dllimport)
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</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
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>andrey.kuleshov@intel.com
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>!- Clang is not adding template functions with __declspec(dllimport) to the
COFF symbol table, this behavior differs from a behavior of msvc -!
=========Environment=============
OS: Win
Lang: c++
Version: trunk
=========Reproducer==============
test.cpp
-----------
template<class _E>
struct basic_string {
void func(int npos);
static const int npos;
};
template<class _E> const int
basic_string<_E>::npos = -1;
typedef basic_string<char> string;
string s;
int main()
{
s.func(basic_string<char>::npos);
return 0;
}
template <class T>
basic_string<T> foo() { return s; }
template class __declspec(dllimport) basic_string<char> foo();
-----------
$ cl -c test.cpp /Fomstest.obj
$ clang-cl -c test.cpp /Foclangtest.obj
===========Output================
<span class="quote">>>> MSVC (vs2015):</span >
$ dumpbin /symbols mstest.obj | grep -i dllimport | cut -f2 -d"|"
__imp_?func@?$basic_string@D@@QEAAXH@Z (__declspec(dllimport) public: void
__cdecl basic_string<char>::func(int))
<span class="quote">>>> clang:</span >
$ dumpbin /symbols clangtest.obj | grep -i dllimport | cut -f2 -d"|"
<empty output>
Andrey Kuleshov
======
Software Engineer
Intel Compiler Team</pre>
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