I'd like to add as a separate comment, while the use if the 1; is "it depends"; I would absolutely always localize $@ as close in scope to the eval {} as make sense; usually right before it (unless it's already been done in the same scope and if there are a series of eval{}s that have already been successfully executed.

local $@;
my $ok = eval {
  doSomethingButDontWantReturnValButCouldDie() or undef;
  1;
};
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