Kees Cook <keescook@xxxxxxxxxxxx> writes: > There wasn't any mention of when/where DECLARE_FLEX_ARRAY() should be > used, so add the rationale and an example to the deprecation docs. > > Suggested-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx> > Cc: Jonathan Corbet <corbet@xxxxxxx> > Cc: "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx> > Cc: linux-doc@xxxxxxxxxxxxxxx > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> > --- > Documentation/process/deprecated.rst | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) I've applied this, but couldn't resist making one tweak... > diff --git a/Documentation/process/deprecated.rst b/Documentation/process/deprecated.rst > index c8fd53a11a20..fcac0a929efa 100644 > --- a/Documentation/process/deprecated.rst > +++ b/Documentation/process/deprecated.rst > @@ -346,3 +346,29 @@ struct_size() and flex_array_size() helpers:: > instance->count = count; > > memcpy(instance->items, source, flex_array_size(instance, items, instance->count)); > + > +There are two special cases of replacement where the DECLARE_FLEX_ARRAY() > +helper needs to be used. (Note that it is named __DECLARE_FLEX_ARRAY() for > +use in UAPI headers.) When the flexible array is either alone in a struct, > +or is part of a union. The pedant in me couldn't stand leaving that sentence fragment, so I made a complete sentence out of it. Thanks, jon
