[llvm-bugs] [Bug 27366] New: Formatter does not handle c++11 string literal prefix with stringize #

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27366

            Bug ID: 27366
           Summary: Formatter does not handle c++11 string literal prefix
                    with stringize #
           Product: clang
           Version: unspecified
          Hardware: All
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Formatter
          Assignee: unassignedclangbugs at nondot.org
          Reporter: gunnar.roth at gmx.de
                CC: djasper at google.com, klimek at google.com,
                    llvm-bugs at lists.llvm.org
    Classification: Unclassified

For L this was fixed in bug 17144, but u etc. are not fixed.

Example : 
#define _u(str) u#str
will become
#define _u(str) u #str
this breaks compiling.


the code 
 if (Right.is(tok::hash) && Left.is(tok::identifier) && Left.TokenText == "L")
     return false;
in TokenAnnotator.cpp takes only care of L not the other possible prefixes.
see https://msdn.microsoft.com/en-US/library/69ze775t.aspx

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