The first set of parens are a required part of the for/foreach syntax, not an empty list. Put an empty list inside them and all is well:

c:\test\xx>perl -we"for () { print; }"
syntax error at -e line 1, near "() "
Execution of -e aborted due to compilation errors.

c:\test\xx>perl -we"for (()) { print; }"

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In reply to Re: foreach over empty list by BrowserUk
in thread foreach over empty list by rovf

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