There are some situations (which I do not fully understand) where eval{} can trap an error and yet fail to set $@. However the return value will be undef.

So... 

unless( eval { require module; 1 } ) {
  my $err = $@ || 'eval failed but did not return error';
  # do something with $err
}

[download]
Update: instert missing 1.

In reply to Re: eval {require module};? by nobull
in thread eval {require module};? by Anonymous Monk

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