Re: ada/c if - putenv?

[Geoff Bull <geoff@research.canon.com.au>]

Jeff Carter wrote:
> 
> Your program works fine as-is with GNAT 3.12p/Win98.
> 
> I don't know how putenv is supposed to work, but that Free in your
> Putenv procedure looks suspicious ...

Yes that's it.
man putenv gives this information:

     the string pointed to by  string
     becomes part of the environment, so altering the string will
     change the environment. 


...
     A potential error is to call the function  putenv()  with  a
     pointer to an automatic variable as the argument and to then
     exit the calling function while string is still part of  the
     environment.

And deallocating the string is equally a problem.

I've seen this answered here a few times over the years.

Cheers
Geoff