Re: [COMMITTED] gcc-14: Add Ada changes

[Marek Polacek <polacek@redhat.com>]

On Fri, Apr 26, 2024 at 10:55:35AM +0200, Marc Poulhiès wrote:
> Co-authored-by: Fernando Oleo Blanco <irvise_ml@irvise.xyz>
> Co-authored-by: Piotr Trojanek <trojanek@adacore.com>
> Signed-off-by: Marc Poulhiès <poulhies@adacore.com>
> ---
>  htdocs/gcc-14/changes.html | 67 +++++++++++++++++++++++++++++++++++++-
>  1 file changed, 66 insertions(+), 1 deletion(-)
> 
> diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html
> index 83b1016c..87e04cb8 100644
> --- a/htdocs/gcc-14/changes.html
> +++ b/htdocs/gcc-14/changes.html
> @@ -239,7 +239,72 @@ a work-in-progress.</p>
>    </li>
>  </ul>
>  
> -<!-- <h3 id="ada">Ada</h3> -->
> +<h3 id="ada">Ada</h3>
> +
> +<ul>
> +  <li>New implementation-defined aspects and pragmas:
> +    <ul>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-Local_005fRestrictions.html"><code>Local_Restrictions</code></a>,
> +      which specifies that a particular subprogram does not violate one or more
> +      local restrictions, nor can it call a subprogram that is not subject to
> +      the same requirements.</li>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Pragma-User_005fAspect_005fDefinition.html"><code>User_Aspect_Definition</code></a>
> +      and <a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-User_005fAspect.html"><code>User_Aspect</code></a>,
> +      which provide a mechanism for avoiding textual duplication if some set of
> +      aspect specifications is needed in multiple places.</li>
> +    </ul>
> +  </li>
> +  <li>New implementation-defined aspects and pragmas for verification of the
> +  SPARK 2014 subset of Ada:
> +    <ul>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-Always_005fTerminates.html"><code>Always_Terminates</code></a>,
> +      which provides a condition for a subprogram to necessarily complete
> +      (either return normally or raise an exception).</li>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-Ghost_005fPredicate.html"><code>Ghost_Predicate</code></a>,
> +      which introduces a subtype predicate that can reference Ghost entities.
> +      </li>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-Exceptional_005fCases.html"><code>Exceptional_Cases</code></a>,
> +      which lists exceptions that might be propagated by the subprogram with
> +      side effects in the context of its precondition and associates them with a
> +      specific postcondition.
> +      </li>
> +      <li><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Aspect-Side_005fEffects.html"><code>Side_Effects</code></a>,
> +      which indicates that a function should be handled like a procedure with
> +      respect to parameter modes, Global contract, exceptional contract and
> +      termination: it may have output parameters, write global variables, raise
> +      exceptions and not terminate.</li>
> +    </ul>
> +  </li>
> +  <li>The new attributes and contracts have been applied to the relevant parts
> +  of the Ada runtime library, which has been subsequently proven to be correct
> +  with SPARK 2014.</li>
> +  <li>Initial support for the
> +  <a href="https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/"><code>CHERI</code></a>
> +  architecture.</li>
> +  <li>Support for the <code>LoongArch</code> architecture.</li>
> +  <li>Support for vxWorks 7 Cert RTP has been removed.</li>
> +  <li>Additional hardening improvements. For more information reltated to
> +    hardening options, refer to
> +    the <a href="https://gcc.gnu.org/onlinedocs/gcc/Instrumentation-Options.html#index-fharden-compares">GCC
> +    Instrumentation Options</a> and
> +    the <a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Security-Hardening-Features.html">GNAT
> +    Reference Manual, Security and Hardening Features</a>.
> +  </li>
> +  <li>Improve style checking for redundant parentheses
> +  with <a href="https://gcc.gnu.org/onlinedocs/gnat_ugn/Style-Checking.html#index--gnatyz-_0028gcc_0029"><code>-gnatyz</code></a></li>
> +  <li>New
> +  switch <a href="https://gcc.gnu.org/onlinedocs/gnat_ugn/Alphabetical-List-of-All-Switches.html#index--gnateH-_0028gcc_0029"><code>-gnateH</code></a>
> +  to force reverse Bit_Order threshold to 64.</li>
> +  <li>Experimental features:
> +    <ul><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Pragma-Storage_005fModel.html">Storage
> +    Model</a>: this feature proposes to redesign the concepts of Storage Pools
> +    into a more efficient model allowing higher performances and easier
> +    integration with low footprint embedded run-times.</ul>
> +    <ul><a href="https://gcc.gnu.org/onlinedocs/gnat_rm/String-interpolation.html">String
> +    Interpolation</a>: allows for easier string formatting.</ul>
> +  </li>
> +  <li>Further clean up and improvements to the GNAT code.</li>
> +</ul>

Some of this doesn't pass https://validator.w3.org/.  Please take a look
when you get a chance.  Thanks,

Marek