https://llvm.org/bugs/show_bug.cgi?id=26936
Bug ID: 26936
Summary: [ms][dll] clang generates a COFF symbol table that
differs from msvc with __declspec(dllimport)
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: andrey.kules...@intel.com
CC: dgre...@apple.com, llvm-bugs@lists.llvm.org
Classification: Unclassified
!- 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================
>>> MSVC (vs2015):
$ 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))
>>> clang:
$ dumpbin /symbols clangtest.obj | grep -i dllimport | cut -f2 -d"|"
<empty output>
Andrey Kuleshov
======
Software Engineer
Intel Compiler Team
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