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