Throw a std::bad_array_new_length exception when the expression (or constant-expression) passed to operator new[] results in overflow in conformance with [expr.new]p7. Fixes PR11644.

llvm-svn: 216675

1 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGCXXABI.h b/clang/lib/CodeGen/CGCXXABI.h
index 39813fd475d..af5fb19f256 100644
--- a/clang/lib/CodeGen/CGCXXABI.h
+++ b/clang/lib/CodeGen/CGCXXABI.h
@@ -236,6 +236,13 @@ public:
 
   virtual bool EmitBadCastCall(CodeGenFunction &CGF) = 0;
 
+  /// Emit the code required to throw a std::bad_array_new_length exception by
+  /// the ABI, and returns the array length size to allocate.
+  virtual llvm::Value *
+  EmitNewArrayLengthOverflowCheck(CodeGenFunction &CGF, bool ConstantOverflow,
+                                  llvm::Value *DynamicOverflow,
+                                  llvm::Value *Size);
+
   virtual llvm::Value *GetVirtualBaseClassOffset(CodeGenFunction &CGF,
                                                  llvm::Value *This,
                                                  const CXXRecordDecl *ClassDecl,