https://issues.dlang.org/show_bug.cgi?id=23838

          Issue ID: 23838
           Summary: DMD lexer / parser examples might not compile
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: andrej.mitrovich@gmail.com

For example this one: https://github.com/dlang/dmd/blob/master/compiler/test/dub_package/lexer.d

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$ mv lexer.d app.d
$ dmd -I/c/dev/dmd/compiler/src/ app.d

app.d(17): Error: none of the overloads of `this` are callable using argument
types `(string, immutable(char)*, int, ulong, int, int)`
/c/dev/dmd/compiler/src/dmd/lexer.d(111):        Candidates are:
`dmd.lexer.Lexer.this(const(char)* filename, const(char)* base, ulong
begoffset, ulong endoffset, bool doDocComment, bool commentToken, ErrorSink
errorSink, const(char)[] vendor = "DLF", uint versionNumber = 1u)`
/c/dev/dmd/compiler/src/dmd/lexer.d(170):
`dmd.lexer.Lexer.this(const(char)* filename, const(char)* base, ulong
begoffset, ulong endoffset, bool doDocComment, bool commentToken, bool
whitespaceToken, ErrorSink errorSink)`
/c/dev/dmd/compiler/src/dmd/lexer.d(182):
`dmd.lexer.Lexer.this(ErrorSink errorSink)`
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Tried with DMD sources from the last release and also from `master`.

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