Should srand(undef) be srand() or srand(0) ?

Currently srand(undef) assumes its seed is 0.  That seems wrong to me. 
Is there a reason not to change it to generate a seed in this circumstance?

• Should srand(undef) be srand() or srand(0) ? by karl williamson
• Re: Should srand(undef) be srand() or srand(0) ? by Zefram
• Re: Should srand(undef) be srand() or srand(0) ? by Zsbán Ambrus
• Re: Should srand(undef) be srand() or srand(0) ? by Abigail
• Re: Should srand(undef) be srand() or srand(0) ? by demerphq
• Re: Should srand(undef) be srand() or srand(0) ? by Joshua Juran