Improve handling of base initializers. We now parse initializers in out of line decls, such as:

class C {
    C() { }
    
    int a;
};

C::C() : a(10) { }

We also diagnose when initializers are used on declarations that aren't constructors:

t.cpp:1:10: error: only constructors take base initializers
void f() : a(10) { }
         ^

Doug and/or Sebastian: I'd appreciate a review, especially the nested-name-spec test results (from the looks of it we now match gcc in that test.)


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@67672 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 6b9012b..42b0205 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -1588,6 +1588,10 @@
 
   void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl);
 
+  virtual void ActOnMemInitializers(DeclTy *ConstructorDecl, 
+                                    SourceLocation ColonLoc,
+                                    MemInitTy **MemInits, unsigned NumMemInits);
+  
   virtual void ActOnFinishCXXMemberSpecification(Scope* S, SourceLocation RLoc,
                                                  DeclTy *TagDecl,
                                                  SourceLocation LBrac,
diff --git a/lib/Sema/SemaDeclCXX.cpp b/lib/Sema/SemaDeclCXX.cpp
index a85d62b..d734ffe 100644
--- a/lib/Sema/SemaDeclCXX.cpp
+++ b/lib/Sema/SemaDeclCXX.cpp
@@ -706,6 +706,18 @@
   return new CXXBaseOrMemberInitializer(BaseType, (Expr **)Args, NumArgs);
 }
 
+void Sema::ActOnMemInitializers(DeclTy *ConstructorDecl, 
+                                SourceLocation ColonLoc,
+                                MemInitTy **MemInits, unsigned NumMemInits) {
+  CXXConstructorDecl *Constructor = 
+  dyn_cast<CXXConstructorDecl>((Decl *)ConstructorDecl);
+  
+  if (!Constructor) {
+    Diag(ColonLoc, diag::err_only_constructors_take_base_inits);
+    return;
+  }
+}
+
 namespace {
   /// PureVirtualMethodCollector - traverses a class and its superclasses
   /// and determines if it has any pure virtual methods.