Allow friend declarations of defaulted special member functions. Only
definitions of such members are prohibited, not mere declarations.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158186 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index fdda901..68f7469 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -2039,7 +2039,7 @@
<< New << getSpecialMember(OldMethod);
return true;
}
- } else if (OldMethod->isExplicitlyDefaulted()) {
+ } else if (OldMethod->isExplicitlyDefaulted() && !isFriend) {
Diag(NewMethod->getLocation(),
diag::err_definition_of_explicitly_defaulted_member)
<< getSpecialMember(OldMethod);
diff --git a/test/SemaCXX/cxx0x-defaulted-functions.cpp b/test/SemaCXX/cxx0x-defaulted-functions.cpp
index 2ab0f73..595d428 100644
--- a/test/SemaCXX/cxx0x-defaulted-functions.cpp
+++ b/test/SemaCXX/cxx0x-defaulted-functions.cpp
@@ -51,3 +51,9 @@
struct lit { constexpr lit() {} };
S<lit> s_lit; // ok
S<bar> s_bar; // ok
+
+struct Friends {
+ friend S<bar>::S();
+ friend S<bar>::S(const S&);
+ friend S<bar>::S(S&&);
+};