Re: GEC Compilation of Externals

Brian Heilig wrote:
> GEC generates bad C code for some of my external routines in secom. 
> However the external compiles correctly on SmartEiffel 1.0 and ES 
> 5.6. Here is the Eiffel code:
> 
> c_set_read_total_constant (an_item: POINTER; a_value: INTEGER) is
>   external
>     "C inline use <windows.h>"
>   alias
>     "((LPCOMMTIMEOUTS) $an_item)->ReadTotalTimeoutConstant = $a_value"
>   end
> 
> And here is the generated C code:
> 
> /* COM_TIMEOUTS.c_set_read_total_constant */
> void T78f23(T0* C, T14 a1, T4 a2)
> {
> ((LPCOMMTIMEOUTS) a1)->ReadTotalTimeoutConstant = a2
> }
> 
> I think the only problem here is that the semi-colon is missing.
> 
> Here is the code generated by SmartEiffel (irrelevant parts removed):
> 
> void r227c_set_read_total_constant(se_dump_stack*caller,T8 a1,T2 a2){
> ...
> ((LPCOMMTIMEOUTS) a1)->ReadTotalTimeoutConstant = a2;
> ...
> }
> 
> Will this be 'fixed' or should I change my code? If I need to change 
> my code to compile with SE, ISE, and GEC, what do I need to do?

As far as I know GEC implements what is specified in ECMA Eiffel.
You would have to write:

  c_set_read_total_constant (an_item: POINTER; a_value: INTEGER) is
    external
      "C inline use <windows.h>"
    alias
      "((LPCOMMTIMEOUTS) $an_item)->ReadTotalTimeoutConstant = $a_value;"
    end

I'll try to see if I can make it compatible with ISE Eiffel while
still accepting ECMA Eiffel valid code.

-- 
Eric Bezault
mailto:ericb-D6Qt/9opevxWk0Htik3J/[email protected]
http://www.gobosoft.com




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