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(parent: a49d0b7) | patch

Ignore interrupts during quickdie().

Ignore interrupts during quickdie().

Once the administrator has called for an immediate shutdown or a backend
crash has triggered a reinitialization, no mere SIGINT or SIGTERM should
change that course. Such derailment remains possible when the signal
arrives before quickdie() blocks signals. That being a narrow race
affecting most PostgreSQL signal handlers in some way, leave it for
another patch. Back-patch this to all supported versions.

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