a MacroInfo object if the identifier was a macro name.

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uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

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> 'long long' is an extension when C99 mode is not enabled
to
> 'long long' is a C++11 extension
while compiling in C++98 mode.


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StringRef makes code cleaner.  Also, make the temporary buffer smaller:
512 characters is unreasonably large for integer literals.


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The member variable is always "LangOpts" and the member function is always "getLangOpts".

Reviewed by Chris Lattner

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user-defined-floating-literal. Support for raw forms of these literals
to follow.


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grammar requires a string-literal and not a user-defined-string-literal. The
two constructs are still represented by the same TokenKind, in order to prevent
a combinatorial explosion of different kinds of token. A flag on Token tracks
whether a ud-suffix is present, in order to prevent clients from needing to look
at the token's spelling.


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(I was going to fix the TODO about DenseMap too, but
that would break self-host right now. See PR11922.)

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Remove unreachable code in Clang. (replace with llvm_unreachable where appropriate or when GCC requires it)

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This also adds a -Wc++98-compat-pedantic for warning on constructs which would
be diagnosed by -std=c++98 -pedantic (that is, it warns even on C++11 features
which we enable by default, with no warning, in C++98 mode).


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operator is seen, from Jason Haslam!


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Previously we would cut off the source file buffer at the code-completion
point; this impeded code-completion inside C++ inline methods and,
recently, with buffering ObjC methods.

Have the code-completion inserted into the source buffer so that it can
be buffered along with a method body. When we actually hit the code-completion
point the cut-off lexing or parsing.

Fixes rdar://10056932&8319466

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1. Be more tolerant of comments in -CC (comment-preserving) mode.  We were missing a few cases.

2. Make sure to expand the second FOO in "#if defined FOO FOO".  (See also
r97253, which addressed the case of "#if defined(FOO FOO".)

Fixes PR10286.



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them into the clang namespace.


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The previous name was inaccurate as this token in fact appears at
the end of every preprocessing directive, not just macro definitions.
No functionality change, except for a diagnostic tweak.

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Diagnostic pragmas are broken because we don't keep track of the diagnostic state changes and we only check the current/latest state.
Problems manifest if a diagnostic is emitted for a source line that has different diagnostic state than the current state; this can affect
a lot of places, like C++ inline methods, template instantiations, the lexer, etc.

Fix the issue by having the Diagnostic object keep track of the source location of the pragmas so that it is able to know what is the diagnostic state at any given source location.

Fixes rdar://8365684.

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into APInt.


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arguments.


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e.g., after #ifdef/#ifndef or #undef, or inside a defined <macroname>
expression in a preprocessor conditional.


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SourceManager's getBuffer() and, therefore, could fail, along with
Preprocessor::getSpelling(). Use the Invalid parameters in the literal
parsers (string, floating point, integral, character) to make them
robust against errors that stem from, e.g., PCH files that are not
consistent with the underlying file system.

I still need to audit every use caller to all of these routines, to
determine which ones need specific handling of error conditions.



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returns a StringRef. Use it to simplify some repetitive code.


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expanding directives withing macro expansions.  This is undefined behavior
according to 6.10.3p11, so we might as well be undefined in ways similar to
GCC.


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preprocessor.



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redundant #includes.  Patch by Anders Johnsen!


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.def file for each library.  This means that adding a diagnostic
to sema doesn't require all the other libraries to be rebuilt.

Patch by Anders Johnsen!


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