Re: [Flex-help] declaration error after code generation

[George N. <gn...@gm...>]

Hi Aaron,

Thanks for the reply.  I am using version 2.5.35, which I think is the most
recent.  I don't see anything on the flex website for developer code.

- George

On Sun, Mar 29, 2009 at 11:46 PM, Aaron Stone <aa...@se...> wrote:

> Certainly looks like a bug. What version of flex are you using?
>
> On Sun, 29 Mar 2009 19:35:03 -0400, George Nychis <gn...@gm...>
> wrote:
> > Hi all,
> >
> > I am trying to build an architecture simulator (
> > http://cva.stanford.edu/books/ppin/#sim) that uses flex with bison to
> > generate some code.  I'm not extremely familiar with either tool.  It
> first
> > uses flex to generate configlex.cpp from config.l:
> > flex -Pconfig -oconfiglex.cpp config.l
> >
> > Here is config.l and configlex.cpp, respectively:
> > http://pastebin.com/f746a6b77
> > http://pastebin.com/f598c894e
> >
> > Line 18 in config.l has:
> > unsigned int configlineno = 1;
> >
> > After flex runs, configlex.cpp generates:extern int configlineno; // line
> > 361
> > int configlineno = 1; // line 363unsigned int configlineno = 1; // line
> 493
> >
> > This obviously creates a problem when it tries to build:
> > config.l:18: error: conflicting declaration ‘unsigned int
> configlineno’
> > configlex.cpp:363: error: ‘configlineno’ has a previous declaration
> as
> > ‘int
> > configlineno’
> >
> > Why does it generate both an int and an unsigned int?  I would appreciate
> > any feedback.
> >
> > Thanks!
> > George
> >
>
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