<p>Here are a few tasks that are available for newcomers to work on, depending
on what your interests are. This list is provided to generate ideas, it is not
intended to be comprehensive. Please ask on cfe-dev for more specifics or to
verify that one of these isn't already completed. :)</p>
<ul>
<li><b>Compile your favorite C/ObjC project with Clang</b>:
Clang's type-checking and code generation is very close to complete (but not bug free!) for C and Objective-C. We appreciate all reports of code that is
rejected or miscompiled by the front-end. If you notice invalid code that is not rejected, or poor diagnostics when code is rejected, that is also very important to us. For make-based projects,
<li>Fix bugs: there are a number of XFAIL'd test cases in Clang's repository (particularly in the CXX subdirectory). Pick a test case and fix Clang to make it work!</li>
<li>Write tests: the CXX test subdirectory in Clang's repository has placeholders for tests of every paragraph in the C++ standard. Pick a paragraph, write a few tests, and see if they work! Even if they don't we'd still like the new tests (with XFAIL'd) so that we know what to fix.</li>
<li>Type-checking for explicit conversions: currently follows C semantics, not C++ semantics.</li>
<li>Qualified member references: C++ supports qualified member references such as <code>x->Base::foo</code>, but Clang has no parsing or semantic analysis for them.</li>
<li>AST representation for implicit C++ conversions: implicit conversions that involve non-trivial operations (e.g., invoking a user-defined conversion function, performing a base-to-derived or derived-to-base conversion) need explicit representation in Clang's AST.</li>
<li>Improved diagnostics for overload resolution failures: after an overload resolution failure, we currently print out the overload resolution candidates. We should also print out the reason that each candidate failed, e.g., "too few arguments", "too many arguments", "cannot initialize parameter with an lvalue of type 'foo'", etc.</li>
</ul>
Also, see the <ahref="cxx_status.html">C++ status report page</a> to
find out what is missing and what is already at least partially
supported.</li>
</ul>
<p>If you hit a bug with clang, it is very useful for us if you reduce the code
that demonstrates the problem down to something small. There are many ways to