in reply to Re^5: FATAL ERROR: Can't use string ("HASH(0x875fffc)") as a HASH ref while "strict refs" in use at
in thread FATAL ERROR: Can't use string ("HASH(0x875fffc)") as a HASH ref while "strict refs" in use at

Basically, you can't. The memory allocated to $hash is released as soon as ab returns because there is no reference to $hash anymore. If you need a reference to data, keep it as a reference. Don't convert it to a string.

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