gcc-11/changes: Document new Hardware-assisted AddressSanitizer.
I have put it in the "general" section rather than AArch64 since the feature
does add a general framework, so I believe the news is interesting for people
interesting in architectures other than AArch64 that may want to implement this
for their own targets (where possible).
############### Attachment also inlined for ease of reply ###############
diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html
index
46a6a37225526227fb6a46d9d3248d6ba9f36a07..0127a3f99f2ca897bf1c32e967d359fb9ace6f6b
100644
--- a/htdocs/gcc-11/changes.html
+++ b/htdocs/gcc-11/changes.html
@@ -116,6 +116,24 @@ a work-in-progress.</p>
option (which defaults to 8 spaces per tab stop).
</p>
</li>
+ <li>
+ <p>
+ Introduce <a
href="http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html";>
+ Hardware-assisted AddressSanitizer</a> support. This sanitizer
currently only works
+ for the AArch64 target. It helps debug address problems similarly to
+ <a href="https://github.com/google/sanitizers/wiki/AddressSanitizer";>
+ AddressSanitizer</a> but is based on partial hardware assistance and
+ provides probabilistic protection to use less RAM at runtime.
+ <a
href="http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html";>
+ Hardware-assisted AddressSanitizer</a> is not production-ready for
userspace, and is
+ provided mainly for use compiling the Linux Kernel.
+ </p>
+ To use this sanitizer the command line arguments are:
+ <ul>
+ <li><code>-fsanitize=hwaddress</code> to instrument userspace code.</li>
+ <li><code>-fsanitize=kernel-hwaddress</code> to instrument kernel
code.</li>
+ </ul>
+ </li>
</ul>
<!-- .................................................................. -->
diff --git a/htdocs/gcc-11/changes.html b/htdocs/gcc-11/changes.html
index
46a6a37225526227fb6a46d9d3248d6ba9f36a07..0127a3f99f2ca897bf1c32e967d359fb9ace6f6b
100644
--- a/htdocs/gcc-11/changes.html
+++ b/htdocs/gcc-11/changes.html
@@ -116,6 +116,24 @@ a work-in-progress.</p>
option (which defaults to 8 spaces per tab stop).
</p>
</li>
+ <li>
+ <p>
+ Introduce <a
href="http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html";>
+ Hardware-assisted AddressSanitizer</a> support. This sanitizer
currently only works
+ for the AArch64 target. It helps debug address problems similarly to
+ <a href="https://github.com/google/sanitizers/wiki/AddressSanitizer";>
+ AddressSanitizer</a> but is based on partial hardware assistance and
+ provides probabilistic protection to use less RAM at runtime.
+ <a
href="http://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html";>
+ Hardware-assisted AddressSanitizer</a> is not production-ready for
userspace, and is
+ provided mainly for use compiling the Linux Kernel.
+ </p>
+ To use this sanitizer the command line arguments are:
+ <ul>
+ <li><code>-fsanitize=hwaddress</code> to instrument userspace code.</li>
+ <li><code>-fsanitize=kernel-hwaddress</code> to instrument kernel
code.</li>
+ </ul>
+ </li>
</ul>
<!-- .................................................................. -->
