Messages in this thread | | | Date | Thu, 1 Dec 2022 23:21:50 +0000 | From | Sakari Ailus <> | Subject | Re: [PATCH 1/4] container_of: add container_of_const() that preserves const-ness of the pointer |
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Hi Greg,
On Thu, Dec 01, 2022 at 08:30:54PM +0100, Greg Kroah-Hartman wrote: > container_of does not preserve the const-ness of a pointer that is > passed into it, which can cause C code that passes in a const pointer to > get a pointer back that is not const and then scribble all over the data > in it. To prevent this, container_of_const() will preserve the const > status of the pointer passed into it using the newly available _Generic() > method.
"_const" in the name suggests that the macro would always take a const argument. Could this be called e.g. container_of_safe() (for type-safe, but full type_safe would be a bit long)?
-- Kind regards,
Sakari Ailus
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