Prototype "$" imposes a scalar context on the corresponding expression in the parameter list. That means that my cannot possibly return a list. Without trying, I'd guess it returns the last of the values it would normally return. To avoid this problem, remove the prototype or use 

tst(my $x, my $y);

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(Spotty internet delayed my posting. Sorry for repeating what moritz covered.)

In reply to Re: why doesn't "my ($a,$b)" return a list? by ikegami
in thread why doesn't "my ($a,$b)" return a list? by LanX

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