gcc-wwwdocs branch master updated. 89d90f8c476d7980752ab43ec80cfa414996a7f0

gcc-wwwdocs branch master updated. 89d90f8c476d7980752ab43ec80cfa414996a7f0

[Richard Sandiford]

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- Log -----------------------------------------------------------------
commit 89d90f8c476d7980752ab43ec80cfa414996a7f0
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Tue Feb 22 09:19:53 2022 +0000

    Document ShadowCallStack support

diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index 4be3ee72..e7c6ed8e 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -96,6 +96,17 @@ a work-in-progress.</p>
       Note that default vectorizer cost model has been changed which used to behave
       as <code>-fvect-cost-model=cheap</code> were specified.
   </li>
+  <li>
+    GCC now supports the
+    <a href="https://clang.llvm.org/docs/ShadowCallStack.html">
+    ShadowCallStack</a> sanitizer, which can be enabled using the
+    command-line option
+    <a href="https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gcc/Instrumentation-Options.html#index-fsanitize_003dshadow-call-stack">
+    <code>-fsanitize=shadow-call-stack</code></a>.  This sanitizer currently
+    only works on AArch64 targets and it requires an environment in
+    which all code has been compiled with <code>-ffixed-r18</code>.
+    Its primary initial user is the Linux kernel.
+  </li>
 </ul>
 
 <!-- .................................................................. -->

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Summary of changes:
 htdocs/gcc-12/changes.html | 11 +++++++++++
 1 file changed, 11 insertions(+)


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