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<a href="https://gitlab.rtems.org/joel">Joel Sherrill</a> created an issue: <a href="https://gitlab.rtems.org/rtems/tools/rtems-source-builder/-/issues/141">#141</a>
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<a href="#summary" aria-hidden="true" class="anchor" id="user-content-summary" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Summary</h2>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Issue <a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5267" data-reference-type="issue" data-original="https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5267" data-link="false" data-link-reference="true" data-issue="29096" data-project="26" data-iid="5267" data-namespace-path="rtems/rtos/rtems" data-project-path="rtems/rtos/rtems" data-issue-type="issue" data-container="body" data-placement="top" title="GCC 14 Missing Atomic Support Routines for Older Cores" class="gfm gfm-issue" style="margin-top: 0;">rtems/rtos/rtems#5267 (closed)</a> resulted in adding code to RTEMS for a default version of __<em>atomic_test_and_set</em> being added to RTEMS and multiple BSPs including that file in their build specification.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">There is now a patch posted for <a href="https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118977" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">GCC Issue 118977</a>. <a href="https://gitlab.rtems.org/joel" data-reference-type="user" data-user="7" data-container="body" data-placement="top" class="gfm gfm-project_member js-user-link" title="Joel Sherrill" style="color: #284779; background-color: #cbe2f9; border-radius: .25rem; padding: 0 2px;">@joel</a> tested this patch and it seems to address the original issue. It is unknown at this point (5 Nov 2025) when this patch will be committed to GCC and to which branches. When it is committed, we need to evaluate what we want to do. Options are:</p>
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<li style="margin-top: 0; line-height: 1.6em; margin-left: 25px; padding-left: 3px;">Add the patch via the RSB</li>
<li style="line-height: 1.6em; margin-left: 25px; padding-left: 3px;">Update the GCC 15 version if the patch is merged to the branch and a new GCC release is made from the 15 branch</li>
<li style="line-height: 1.6em; margin-left: 25px; padding-left: 3px;">Do nothing and carry the current RTEMS solution until 7 is branched and main moves to GCC 16.</li>
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Setting the milestone to 7.1 so we have a discussion about what to do.</p>
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<a href="#steps-to-reproduce" aria-hidden="true" class="anchor" id="user-content-steps-to-reproduce" style="margin-top: 0; margin-left: -20px; text-decoration: none; outline: none; position: absolute; width: 20px;"></a>Steps to reproduce</h2>
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