CallExpr now uses ASTContext's allocate to allocate/delete its array of subexpressions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64162 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index f881e81..af41796 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -1226,8 +1226,8 @@
         UsualUnaryConversions(FnExpr);
 
         Input.release();
-        return Owned(new (Context)CXXOperatorCallExpr(FnExpr, Args, 2, ResultTy, 
-                                                   OpLoc));
+        return Owned(new (Context) CXXOperatorCallExpr(Context, FnExpr, Args, 2,
+                                                       ResultTy, OpLoc));
       } else {
         // We matched a built-in operator. Convert the arguments, then
         // break out so that we will build the appropriate built-in
@@ -1326,7 +1326,7 @@
 
         Base.release();
         Idx.release();
-        return Owned(new (Context) CXXOperatorCallExpr(FnExpr, Args, 2, 
+        return Owned(new (Context) CXXOperatorCallExpr(Context, FnExpr, Args, 2, 
                                                        ResultTy, LLoc));
       } else {
         // We matched a built-in operator. Convert the arguments, then
@@ -1850,7 +1850,7 @@
       Dependent = true;
 
     if (Dependent)
-      return Owned(new (Context) CallExpr(Fn, Args, NumArgs,
+      return Owned(new (Context) CallExpr(Context, Fn, Args, NumArgs,
                                           Context.DependentTy, RParenLoc));
 
     // Determine whether this is a call to an object (C++ [over.call.object]).
@@ -1943,8 +1943,10 @@
   // of arguments and function on error.
   // FIXME: Except that llvm::OwningPtr uses delete, when it really must be
   // Destroy(), or nothing gets cleaned up.
-  ExprOwningPtr<CallExpr> TheCall(this, new (Context) CallExpr(Fn, Args,NumArgs,
-                                                 Context.BoolTy, RParenLoc));
+  ExprOwningPtr<CallExpr> TheCall(this, new (Context) CallExpr(Context, Fn,
+                                                               Args, NumArgs,
+                                                               Context.BoolTy,
+                                                               RParenLoc));
 
   const FunctionType *FuncT;
   if (!Fn->getType()->isBlockPointerType()) {
@@ -3795,7 +3797,7 @@
                                                  SourceLocation());
         UsualUnaryConversions(FnExpr);
 
-        return Owned(new (Context) CXXOperatorCallExpr(FnExpr, Args, 2, 
+        return Owned(new (Context) CXXOperatorCallExpr(Context, FnExpr, Args, 2, 
                                                        ResultTy, TokLoc));
       } else {
         // We matched a built-in operator. Convert the arguments, then
@@ -3897,7 +3899,7 @@
         UsualUnaryConversions(FnExpr);
 
         input.release();
-        return Owned(new (Context) CXXOperatorCallExpr(FnExpr, &Input, 1,
+        return Owned(new (Context) CXXOperatorCallExpr(Context, FnExpr, &Input, 1,
                                                        ResultTy, OpLoc));
       } else {
         // We matched a built-in operator. Convert the arguments, then
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 69bbf0e..c91b507 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -2123,7 +2123,11 @@
                             SourceLocation());
   ImplicitCastExpr ConversionFn(Context.getPointerType(Conversion->getType()),
                                 &ConversionRef, false);
-  CallExpr Call(&ConversionFn, 0, 0, 
+  
+  // Note that it is safe to allocate CallExpr on the stack here because 
+  // there are 0 arguments (i.e., nothing is allocated using ASTContext's
+  // allocator).
+  CallExpr Call(Context, &ConversionFn, 0, 0, 
                 Conversion->getConversionType().getNonReferenceType(),
                 SourceLocation());
   ImplicitConversionSequence ICS = TryCopyInitialization(&Call, ToType, true);
@@ -3648,7 +3652,8 @@
 
   assert(Method && "Member call to something that isn't a method?");
   ExprOwningPtr<CXXMemberCallExpr> 
-    TheCall(this, new (Context) CXXMemberCallExpr(MemExpr, Args, NumArgs, 
+    TheCall(this, new (Context) CXXMemberCallExpr(Context, MemExpr, Args,
+                                                  NumArgs, 
                                   Method->getResultType().getNonReferenceType(),
                                   RParenLoc));
 
@@ -3815,7 +3820,7 @@
   // owned.
   QualType ResultTy = Method->getResultType().getNonReferenceType();
   ExprOwningPtr<CXXOperatorCallExpr> 
-    TheCall(this, new (Context) CXXOperatorCallExpr(NewFn, MethodArgs,
+    TheCall(this, new (Context) CXXOperatorCallExpr(Context, NewFn, MethodArgs,
                                                     NumArgs + 1,
                                                     ResultTy, RParenLoc));
   delete [] MethodArgs;
@@ -3928,7 +3933,7 @@
   Expr *FnExpr = new (Context) DeclRefExpr(Method, Method->getType(),
                                            SourceLocation());
   UsualUnaryConversions(FnExpr);
-  Base = new (Context) CXXOperatorCallExpr(FnExpr, &Base, 1, 
+  Base = new (Context) CXXOperatorCallExpr(Context, FnExpr, &Base, 1, 
                                  Method->getResultType().getNonReferenceType(),
                                  OpLoc);
   return ActOnMemberReferenceExpr(S, ExprArg(*this, Base), OpLoc, tok::arrow,