Add a debug checker that is useful to understand how the ExplodedGraph is
built; it can be triggered using the following command:

 clang -cc1 -analyze -analyzer-checker=debug.ViewExplodedGraph my_program.c

A patch by Béatrice Creusillet!

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Add support for polymorphic matchers. Use runtime type checking to determine the right polymorphic overload to use.

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This will enable users in security critical applications to perform
checked-arithmetic in a fast safe manner that is amenable to c.

Tests/an update to Language Extensions is included as well.

rdar://13421498.

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headers may be included from within the module, but not from outside
the module.



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Most of the tests contributed by Edwin Vane.

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[multiprecision-builtins] Added missing builtin __builtin_{add,sub}cb for {add,sub} with carry for bytes.

I have had several people ask me about why this builtin was not available in
clang (since it seems like a logical conclusion). This patch implements said
builtins.

Relevant tests are included as well. I also updated the Clang language extension reference.

rdar://14192664.

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Document -fno-sanitize-recover and -fsanitize-undefined-trap-on-error and attempt to explain the difference between them.


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The ARM cycle-counter can be restricted by the operating system; it's
worth warning potential users of this issue.

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Summary: + improved handling of default style and predefined styles.

Reviewers: djasper, klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D813

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As asked for by Sean, putting the video into the docs.

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completes the implementation of N3638.


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Summary: +updated ClangFormat.rst

Reviewers: djasper, klimek

Reviewed By: klimek

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D780

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Updated reference and unit tests.



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The namespaceDecl() ASTMatcher was added in r179027.



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As suggested by Dmitri Gribenko.

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C++1y: Update __cplusplus to temporary value 201305L to allow detection of provisional C++1y support.
Add __has_feature and __has_extension checks for C++1y features (based on the provisional names from
the C++ features study group), and update documentation to match.


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Thanks to Avi Drissman!

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Patch by Dimitry Andric


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Patch by Jochen Eisinger.

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