[c++20] Implement P1009R2: allow omitting the array bound in an array

new expression.

This was voted into C++20 as a defect report resolution, so we
retroactively apply it to all prior language modes (though it can never
actually be used before C++11 mode).

llvm-svn: 360006

1 files changed, 3 insertions, 3 deletions

diff --git a/clang/lib/CodeGen/CGExprCXX.cpp b/clang/lib/CodeGen/CGExprCXX.cpp
index b0078c22c8a..25b0abbc030 100644
--- a/clang/lib/CodeGen/CGExprCXX.cpp
+++ b/clang/lib/CodeGen/CGExprCXX.cpp
@@ -681,9 +681,9 @@ static llvm::Value *EmitCXXNewAllocSize(CodeGenFunction &CGF,
   // We multiply the size of all dimensions for NumElements.
   // e.g for 'int[2][3]', ElemType is 'int' and NumElements is 6.
   numElements =
-    ConstantEmitter(CGF).tryEmitAbstract(e->getArraySize(), e->getType());
+    ConstantEmitter(CGF).tryEmitAbstract(*e->getArraySize(), e->getType());
   if (!numElements)
-    numElements = CGF.EmitScalarExpr(e->getArraySize());
+    numElements = CGF.EmitScalarExpr(*e->getArraySize());
   assert(isa<llvm::IntegerType>(numElements->getType()));
 
   // The number of elements can be have an arbitrary integer type;
@@ -693,7 +693,7 @@ static llvm::Value *EmitCXXNewAllocSize(CodeGenFunction &CGF,
   // important way: if the count is negative, it's an error even if
   // the cookie size would bring the total size >= 0.
   bool isSigned
-    = e->getArraySize()->getType()->isSignedIntegerOrEnumerationType();
+    = (*e->getArraySize())->getType()->isSignedIntegerOrEnumerationType();
   llvm::IntegerType *numElementsType
     = cast<llvm::IntegerType>(numElements->getType());
   unsigned numElementsWidth = numElementsType->getBitWidth();