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// RUN: %clang_cc1 %s -O1 -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
// CHECK-NOT: @_ZTVN5test118stdio_sync_filebufIwEE = constant
// CHECK-NOT: _ZTVN5test315basic_fstreamXXIcEE
// CHECK: @_ZTVN5test018stdio_sync_filebufIwEE = unnamed_addr constant
// CHECK-NOT: _ZTVN5test31SIiEE
// CHECK-NOT: _ZTSN5test31SIiEE
// CHECK: define linkonce_odr void @_ZN5test21CIiEC1Ev(%"class.test2::C"* nocapture %this) unnamed_addr
// CHECK: define linkonce_odr void @_ZN5test21CIiE6foobarIdEEvT_(
// CHECK: define available_externally void @_ZN5test21CIiE6zedbarEd(
namespace test0 {
struct basic_streambuf {
virtual ~basic_streambuf();
};
template<typename _CharT >
struct stdio_sync_filebuf : public basic_streambuf {
virtual void xsgetn();
};
// This specialization should cause the vtable to be emitted, even with
// the following extern template declaration.
template<> void stdio_sync_filebuf<wchar_t>::xsgetn() {
}
extern template class stdio_sync_filebuf<wchar_t>;
}
namespace test1 {
struct basic_streambuf {
virtual ~basic_streambuf();
};
template<typename _CharT >
struct stdio_sync_filebuf : public basic_streambuf {
virtual void xsgetn();
};
// Just a declaration should not force the vtable to be emitted.
template<> void stdio_sync_filebuf<wchar_t>::xsgetn();
}
namespace test2 {
template<typename T1>
class C {
public:
virtual ~C();
void zedbar(double) {
}
template<typename T2>
void foobar(T2 foo) {
}
};
extern template class C<int>;
void g() {
// The extern template declaration should not prevent us from producing
// the implicit constructor (test at the top).
C<int> a;
// or foobar(test at the top).
a.foobar(0.0);
// But it should prevent zebbar
// (test at the top).
a.zedbar(0.0);
}
}
namespace test3 {
template<typename T>
class basic_fstreamXX {
virtual void foo(){}
virtual void is_open() const { }
};
extern template class basic_fstreamXX<char>;
// This template instantiation should not cause us to produce a vtable.
// (test at the top).
template void basic_fstreamXX<char>::is_open() const;
}
namespace test3 {
template <typename T>
struct S {
virtual void m();
};
template<typename T>
void S<T>::m() { }
// Should not cause us to produce vtable because template instantiations
// don't have key functions.
template void S<int>::m();
}
namespace test4 {
template <class T> struct A { static void foo(); };
class B {
template <class T> friend void A<T>::foo();
B();
};
template <class T> void A<T>::foo() {
B b;
}
unsigned test() {
A<int>::foo();
}
}
namespace PR8505 {
// Hits an assertion due to bogus instantiation of class B.
template <int i> class A {
class B* g;
};
class B {
void f () {}
};
// Should not instantiate class B since it is introduced in namespace scope.
// CHECK-NOT: _ZN6PR85051AILi0EE1B1fEv
template class A<0>;
}
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