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(parent: e2558e0) | patch

Check for interrupts and stack overflow during rule/view dumps.

Check for interrupts and stack overflow during rule/view dumps.

Since ruleutils.c recurses, it could be driven to stack overflow by
deeply nested constructs. Very large queries might also take long
enough to deparse that a check for interrupts seems like a good idea.
Stick appropriate tests into a couple of key places.

Noted by Greg Stark. Back-patch to all supported branches.

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