complex code generator support that does not currently exist in LLVM, and there
is very little demand, so it is unlikely to be implemented anytime soon.</li>
+<li>clang does not support global register variables, this is unlikely
+to be implemented soon.</li>
+
+<li>clang does not support static initialization of flexible array
+members. This appears to be a rarely used extension, but could be
+implemented pending user demand.</li>
+
</ul>
<p>This is not a complete list; if you find an unsupported extension
These extensions are not anywhere near complete, so please do not
file bugs; patches are welcome, though.</p>
+<li>clang does not support the Microsoft extension where anonymous
+record members can be declared using user defined types.</li>
+
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<h2 id="objc">Objective-C Language Features</h2>
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