"... where is that behavior documented?"

The "Illegal division by zero" example is documented in eval. This has additional information about $SIG{__DIE__}.

die also has information about $SIG{__DIE__}.

More general information related to this topic can be found in local, perlsub, perlipc and, as already noted, perlvar.

— Ken

In reply to Re^3: Localizing %SIG by kcott
in thread Localizing %SIG by Darkwing

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