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description Learn more about: C26404 DONT_DELETE_INVALID
title C26404
ms.date 07/21/2017
ms.topic conceptual
f1_keywords
C26404
helpviewer_keywords
C26404
ms.assetid 94afb700-3f3b-40db-8afc-2481935360c2

C26404 DONT_DELETE_INVALID

Once owner pointer releases or transfers its resource, it gets into an "invalid" state. Deleting such a pointer may lead to immediate memory corruption due to double delete, or to an access violation when the deleted resource is accessed from another owner pointer.

Example 1: Deleting an owner after transferring its value

gsl::owner<State*> validState = nullptr;
gsl::owner<State*> state = ReadState();
validState = state;
if (!IsValid(state))
    delete state;   // C26404

Example 2: Deleting an uninitialized owner

gsl::owner<Message*> message;
if (popLast)
    message = ReleaseMessage();
delete message; // C26404