Avoid producing implicit methods when we have a explicit template instantiation
declaration.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99311 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/PR6677.cpp b/test/CodeGenCXX/PR6677.cpp
index 8d168f1..29c737c 100644
--- a/test/CodeGenCXX/PR6677.cpp
+++ b/test/CodeGenCXX/PR6677.cpp
@@ -3,6 +3,9 @@
// CHECK-NOT: @_ZTVN5test118stdio_sync_filebufIwEE = constant
// CHECK: @_ZTVN5test018stdio_sync_filebufIwEE = constant
+// CHECK: define linkonce_odr void @_ZN5test21CIiE5fobarIdEEvT_
+// CHECK: define available_externally void @_ZN5test21CIiE6zedbarEd
+
namespace test0 {
struct basic_streambuf {
virtual ~basic_streambuf();
@@ -13,7 +16,12 @@
};
// This specialization should cause the vtable to be emitted, even with
- // the following extern template declaration.
+ // the following extern template declaration (test at the top).
+
+ // The existance of the extern template declaration should prevent us from emitting
+ // destructors.
+ // CHECK: define available_externally void @_ZN5test018stdio_sync_filebufIwED0Ev
+ // CHECK: define available_externally void @_ZN5test018stdio_sync_filebufIwED2Ev
template<> void stdio_sync_filebuf<wchar_t>::xsgetn() {
}
extern template class stdio_sync_filebuf<wchar_t>;
@@ -28,6 +36,30 @@
virtual void xsgetn();
};
- // Just a declaration should not force the vtable to be emitted.
+ // Just a declaration should not force the vtable to be emitted
+ // (test at the top).
template<> void stdio_sync_filebuf<wchar_t>::xsgetn();
}
+
+namespace test2 {
+ template<typename T1>
+ class C {
+ void zedbar(double) {
+ }
+ template<typename T2>
+ void fobar(T2 foo) {
+ }
+ };
+ extern template class C<int>;
+ void g() {
+ C<int> a;
+ // The extern template declaration should not prevent us from producing
+ /// foobar.
+ // (test at the top).
+ a.fobar(0.0);
+
+ // But it should prevent zebbar
+ // (test at the top).
+ a.zedbar(0.0);
+ }
+}