Weird linking problem on Windows

[İsmail Dönmez]

This is a possible regression:

[~]> clang++ -std=c++14 -D_HAS_EXCEPTIONS=0 auto_ptr.cpp
auto_ptr-556ebb.o : error LNK2019: unresolved external symbol "void
__cdecl operator delete(void *,unsigned __int64)" (??3 at YAXPEAX_K@Z)
referenced in function main
auto_ptr-556ebb.o : error LNK2019: unresolved external symbol
__cxa_call_unexpected referenced in function "public: __cdecl
std::basic_ostream<char,struct std::char_traits<char>
>::sentry::~sentry(void)"
(??1sentry@?$basic_ostream at DU?$char_traits at D@std@@@std@@QEAA at XZ)
a.exe : fatal error LNK1120: 2 unresolved externals
clang++.exe: error: linker command failed with exit code 1120 (use -v
to see invocation)

[~]> clang++ -v
clang version 3.7.0 (http://llvm.org/git/clang.git
d9d3dee4581c591ac65c759df275139ddd4cfa0c)
(http://llvm.org/git/llvm.git
2a43652f3b8a97e67251d80a749d5227667ff5b1)
Target: x86_64-pc-windows-msvc
Thread model: posix

[~]> cat auto_ptr.cpp
#include <memory>
#include <iostream>

class Foo {
public:
    Foo(){};
    ~Foo() { std::cout << "Destructor called." << std::endl; };

    void echo() { std::cout << "Echo!" << std::endl; };
};

int main()
{
    std::auto_ptr<Foo> foo(new Foo);
    foo->echo();

    std::auto_ptr<Foo> bar(foo);

    bar->echo();
    return 0;
}

If I drop -std=c++14 then the delete symbol works:

[~]> clang++ -D_HAS_EXCEPTIONS=0 auto_ptr.cpp
auto_ptr-64308e.o : error LNK2019: unresolved external symbol
__cxa_call_unexpected referenced in function "public: __cdecl
std::basic_ostream<char,struct std::char_traits<char>
>::sentry::~sentry(void)"
(??1sentry@?$basic_ostream at DU?$char_traits at D@std@@@std@@QEAA at XZ)
a.exe : fatal error LNK1120: 1 unresolved externals
clang++.exe: error: linker command failed with exit code 1120 (use -v
to see invocation)

Also, clang-cl works fine.