Implement name mangling for sizeof...(function parameter pack).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134974 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ItaniumMangle.cpp b/lib/AST/ItaniumMangle.cpp
index 5a1025f..5b247f2 100644
--- a/lib/AST/ItaniumMangle.cpp
+++ b/lib/AST/ItaniumMangle.cpp
@@ -2669,15 +2669,8 @@
else if (const TemplateTemplateParmDecl *TempTP
= dyn_cast<TemplateTemplateParmDecl>(Pack))
mangleTemplateParameter(TempTP->getIndex());
- else {
- // Note: proposed by Mike Herrick on 11/30/10
- // <expression> ::= sZ <function-param> # size of function parameter pack
- Diagnostic &Diags = Context.getDiags();
- unsigned DiagID = Diags.getCustomDiagID(Diagnostic::Error,
- "cannot mangle sizeof...(function parameter pack)");
- Diags.Report(DiagID);
- return;
- }
+ else
+ mangleFunctionParam(cast<ParmVarDecl>(Pack));
break;
}
diff --git a/test/CodeGenCXX/mangle.cpp b/test/CodeGenCXX/mangle.cpp
index 0f4e5c5..0b3ba63 100644
--- a/test/CodeGenCXX/mangle.cpp
+++ b/test/CodeGenCXX/mangle.cpp
@@ -839,3 +839,13 @@
// CHECK: define weak_odr void @_ZN6test352f1INS_1AEEEvDTszadsrT_plIiEE
template void f1<A>(__SIZE_TYPE__);
}
+
+namespace test36 {
+ template<unsigned> struct A { };
+
+ template<typename ...Types>
+ auto f1(Types... values) -> A<sizeof...(values)> { }
+
+ // CHECK: define weak_odr {{.*}} @_ZN6test362f1IJifEEENS_1AIXsZfp_EEEDpT_
+ template A<2> f1(int, float);
+}