Implement support for C++ direct initializers that involve dependent

types or type-dependent expressions.

llvm-svn: 80143

1 files changed, 19 insertions, 3 deletions

diff --git a/clang/lib/Sema/SemaDeclCXX.cpp b/clang/lib/Sema/SemaDeclCXX.cpp
index 0dbefe1dd09..41a7fe653d8 100644
--- a/clang/lib/Sema/SemaDeclCXX.cpp
+++ b/clang/lib/Sema/SemaDeclCXX.cpp
@@ -2523,9 +2523,7 @@ void Sema::AddCXXDirectInitializerToDecl(DeclPtrTy Dcl,
     return;
   }
 
-  // FIXME: Need to handle dependent types and expressions here.
-
-  // We will treat direct-initialization as a copy-initialization:
+  // We will represent direct-initialization similarly to copy-initialization:
   //    int x(1);  -as-> int x = 1;
   //    ClassType x(a,b,c); -as-> ClassType x = ClassType(a,b,c);
   //
@@ -2535,6 +2533,24 @@ void Sema::AddCXXDirectInitializerToDecl(DeclPtrTy Dcl,
   // exactly form was it (like the CodeGen) can handle both cases without
   // special case code.
 
+  // If either the declaration has a dependent type or if any of the expressions
+  // is type-dependent, we represent the initialization via a ParenListExpr for
+  // later use during template instantiation.
+  if (VDecl->getType()->isDependentType() ||
+      Expr::hasAnyTypeDependentArguments((Expr **)Exprs.get(), Exprs.size())) {
+    // Let clients know that initialization was done with a direct initializer.
+    VDecl->setCXXDirectInitializer(true);
+    
+    // Store the initialization expressions as a ParenListExpr.
+    unsigned NumExprs = Exprs.size();
+    VDecl->setInit(Context, 
+                   new (Context) ParenListExpr(Context, LParenLoc,
+                                               (Expr **)Exprs.release(),
+                                               NumExprs, RParenLoc));
+    return;
+  }
+    
+
   // C++ 8.5p11:
   // The form of initialization (using parentheses or '=') is generally
   // insignificant, but does matter when the entity being initialized has a