On Mon, Jul 10, 2023 at 9:12 PM Qing Zhao via Gcc-patches <gcc-patches@gcc.gnu.org> wrote: > > Hi, > > This is the change for the GCC14 releaes Notes on the deprecating of a C > extension about flexible array members. > > Okay for committing? > > thanks. > > Qing > > ======== > > *htdocs/gcc-14/changes.html (Caveats): Add notice about deprecating a C > extension about flexible array members. > --- > htdocs/gcc-14/changes.html | 10 +++++++++- > 1 file changed, 9 insertions(+), 1 deletion(-) > > diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html > index 3f797642..c7f2ce4d 100644 > --- a/htdocs/gcc-14/changes.html > +++ b/htdocs/gcc-14/changes.html > @@ -30,7 +30,15 @@ a work-in-progress.</p> > <!-- .................................................................. --> > <h2>Caveats</h2> > <ul> > - <li>...</li> > + <li><strong>C:</strong> > + Support for the GCC extension, a structure containing a C99 flexible > array > + member, or a union containing such a structure, is not the last field > of > + another structure, is deprecated. Refer to > + <a href="https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html";> > + Zero Length Arrays</a>. > + Any code relying on this extension should be modifed to ensure that > + C99 flexible array members only end up at the ends of structures.
If it's deprecated any use should be diagnosed by default with a warning, can you mention that and make sure we do so? What would be the most surprising example of code that's going to be rejected? Richard. > + </li> > </ul> > > > -- > 2.31.1 >
