[ragel] C++ and ragel 7

[Adrian Thurston]

Hi Avi,

These are part of a new backtracking feature and should not be generated 
when not used. Will need to fix that.

Thanks,
-Adrian

On 2017-06-01 12:57, Avi Kivity wrote:
> Testing out ragel 7 (7.0.0.9, from Fedora 26), I get these in my 
> generated code:
> 
> 
>         static const char _nfa_targs[] = {
>             0, 0
>         };
> 
>         static const char _nfa_offsets[] = {
>             0, 0, 0, 0, 0, 0, 0, 0,
>             0, 0, 0, 0, 0, 0, 0, 0,
>             0, 0, 0, 0, 0, 0, 0, 0,
>             0, 0, 0, 0, 0, 0, 0, 0,
>             0, 0, 0, 0
>         };
> 
>         static const char _nfa_push_actions[] = {
>             0, 0
>         };
> 
>         static const char _nfa_pop_trans[] = {
>             0, 0
>         };
> 
> Now, these are never used by the rest of the code, and also don't
> compile in some versions of the C++ compiler.
> 
> 
> This is my command line:
> 
> 
>     ragel -G2 -o $out $in
> 
> 
> Is this a regression? Or am I doing something incorrectly?  Since
> those arrays are zeroed and unreferenced, I'm guessing they shouldn't
> have been emitted in the first place.
> 
> 
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