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-rw-r--r--docs/ReleaseNotes.html7
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/ReleaseNotes.html b/docs/ReleaseNotes.html
index d1759f1c53..ef2f95eb60 100644
--- a/docs/ReleaseNotes.html
+++ b/docs/ReleaseNotes.html
@@ -628,6 +628,13 @@ Please report any bugs or problems.</p>
<li>The C++ front-end inherits all problems afflicting the <a href="#c-fe">C
front-end</a>.</li>
</ul>
+
+<p><b>IA64 note</b>: The C++ front-end does not use <a
+href="http://llvm.cs.uiuc.edu/PR406">IA64 ABI compliant layout of vtables</a>.
+In particular, it just stores function pointers instead of function
+descriptors in the vtable. This bug prevents mixing C++ code compiled with
+LLVM with C++ objects compiled by other C++ compilers.</p>
+
</div>
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