Hi all,
I have a new revision of the patch. Alexandre pointed out a few issues
with the hardening options and I agreed with the comments. I took a look
at when the boolean hardening and stack scrubbing options became
available within Ada. Hardbools were already available in GCC 13.1,
stack scrubbing was already present in GCC 12.1. Which means that adding
this changes to the changelog would be incorrect. The additional
compiler hardening options/flags within GCC are not unique to Ada and
they are already documented in the general compiler section and they are
available for the C family of languages as well as Ada. Therefore, it
made sense not to explicitly have them in the Ada section.
Nonetheless, there have been some (smaller) hardening improvements to
Ada, so I just wrote a generic note and pointers to the documentation. I
know this is not the pretties thing to do, but I did something similar
in the GCC 12 changelog so...
On 2/26/24 20:36, Fernando Oleo Blanco wrote:
> Hi Mark,
>
> On 2/26/24 10:17, Marc Poulhiès wrote:
>>
>> Fernando,
>>
>> Thank you for this work! I have a few comments, see below.
>>
>> diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html
>> index 85ccc54d..e6c96c9f 100644
>> --- a/htdocs/gcc-14/changes.html
>> +++ b/htdocs/gcc-14/changes.html
>> @@ -171,7 +171,49 @@ a work-in-progress.</p>
>> <!-- ..................................................................
>> -->
>> <h2 id="languages">New Languages and Language specific improvements</h2>
>>
>> -<!-- <h3 id="ada">Ada</h3> -->
>> +<h3 id="ada">Ada</h3>
[... omitted for brevity ...]
>
> I have applied your recommendations. The documentation links are still
> not up... Nonetheless, I created the URL in such a way that they should
> work once the final documentation is given a release number (which I
> guessed to be 14.1.0). If you think this can be improved just say so.
> Nonetheless, feel free to modify my patch if you see it fit.
In this newly revised patch I have not modified the URLs to point to the
future GCC 14 documentation. I saw that the links in the changelog all
had the unversioned "master" links, so I just followed the same convention.
>
> Best regards,
> Fer
I squashed the different commits I had submitted and created a
completely new patch. Hopefully this is acceptable and leads to a
cleaner, less noisy commit history/patch. It is attached to the email. I
think the patch should be in an acceptable state to be committed, but
feel free to give back any feedback!
Best regards,
Fer
From 9ad2e979e921938c466de3a7868346e8b2426e49 Mon Sep 17 00:00:00 2001
From: Fernando Oleo Blanco <irv...@irvise.xyz>
Date: Sun, 10 Mar 2024 17:47:46 +0100
Subject: [PATCH] Add Ada changes for v14
---
htdocs/gcc-14/changes.html | 43 +++++++++++++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)
diff --git a/htdocs/gcc-14/changes.html b/htdocs/gcc-14/changes.html
index 85ccc54d..0886241a 100644
--- a/htdocs/gcc-14/changes.html
+++ b/htdocs/gcc-14/changes.html
@@ -171,7 +171,48 @@ a work-in-progress.</p>
<!-- .................................................................. -->
<h2 id="languages">New Languages and Language specific improvements</h2>
-<!-- <h3 id="ada">Ada</h3> -->
+<h3 id="ada">Ada</h3>
+
+<ul>
+ <li>Several new implementation defined aspects and contracts have been
+ added:
+ <ul>
+ <li><code>Exceptional_Cases</code> may be specified for procedures and
+ functions with side effects; it can be used to list exceptions that might
+ be propagated by the subprogram with side effects in the context of its
+ precondition, and associate them with a specific postcondition. For more
+ information, refer to SPARK 2014 Reference Manual, section 6.1.9.</li>
+ <li><code>User_Aspect</code> takes an argument that is the name of an
+ aspect defined by a User_Aspect_Definition configuration pragma.</li>
+ <li><code>Local_Restrictions</code> is used to specify 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><code>Side_Effects</code> is equivalent to <code>pragma
+ Side_Effecs</code>.</li>
+ <li><code>Always_Terminates</code> is a boolean equivalent to <code>pragma
+ Always_Terminates</code></li>
+ <li><code>Ghost_Predicate</code> introduces a subtype predicate that can
+ reference <code>Ghost</code> entities.</li>
+ </ul>
+ For more information and usage guidelines, see
+ the <a href="https://gcc.gnu.org/onlinedocs/gnat_rm/Implementation-Defined-Pragmas.html";>GNAT
+ Reference Manual</a>.
+ </li>
+ <li>The new attributes and contracts have been applied to the relevant parts
+ of the Ada library and more code has been proven to be correct.</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>Further clean up and improvements to the GNAT code.</li>
+</ul>
<!-- <h3 id="c-family">C family</h3> -->
--
2.44.0
