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clarification of F.42

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Bjarne Stroustrup
2015-12-05 21:25:46 -05:00
parent 518304ed63
commit 729db042f1
1 changed files with 4 additions and 4 deletions
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CppCoreGuidelines.md
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@@ -2649,10 +2649,6 @@ Note that pervasive use of `shared_ptr` has a cost (atomic operations on the `sh
That's what pointers are good for. That's what pointers are good for.
Returning a `T*` to transfer ownership is a misuse. Returning a `T*` to transfer ownership is a misuse.
##### Note
Do not return a pointer to something that is not in the caller's scope.
##### Example ##### Example
Node* find(Node* t, const string& s) // find s in a binary tree of Nodes Node* find(Node* t, const string& s) // find s in a binary tree of Nodes
@@ -2670,6 +2666,10 @@ Importantly, that does not imply a transfer of ownership of the pointed-to objec
Positions can also be transferred by iterators, indices, and references. Positions can also be transferred by iterators, indices, and references.
##### Note
Do not return a pointer to something that is not in the caller's scope; see [F.43](#Rf-dangle).
##### Example, bad ##### Example, bad
int* f() int* f()