I inserted 

use warnings;
no warnings 'uninitialized';

[download]

into my code. (I included the no warnings because setting a variable to undef and then referring to that variable produces an uninitialized error, though what it clearly means is undefined, not uninitialized.)

This week's run failed in the old way, and there were no warnings issued.

I did NOT test the value of $! after the readdir because readdir does not set its value, as shown by this small piece of code executed under the debugger: 

  DB<9> p opendir(D,'.')
1
  DB<10> p $!+0          
2
  DB<11> $! = 147

  DB<12> p $!+0  
147
  DB<13> @d = readdir(D) 

  DB<14> p $!+0         
147
  DB<15>

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In reply to Re: Testing for readdir failure by Bob Cook
in thread Testing for readdir failure by Bob Cook

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