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Commit 3b51265

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Adjust obsolete comment explaining set_stack_base().
Commit 7389aad removed the notion of backends started from inside a signal handler. A stray comment still referred to them, while explaining the need for a call to set_stack_base(). That leads to the question of whether we still need the call in !EXEC_BACKEND builds. There doesn't seem to be much point in suppressing it now, as it doesn't hurt and probably helps to measure the stack base from the exact same place in EXEC_BACKEND and !EXEC_BACKEND builds. Back-patch to 16. Reported-by: Heikki Linnakangas <hlinnaka@iki.fi> Reported-by: Tristan Partin <tristan@neon.tech> Reported-by: Andres Freund <andres@anarazel.de> Discussion: https://postgr.es/m/CA%2BhUKG%2BEJHcevNGNOxVWxTNFbuB%3Dvjf4U68%2B85rAC_Sxvy2zEQ%40mail.gmail.com
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‎src/backend/utils/init/miscinit.c

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+2-3Lines changed: 2 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -107,9 +107,8 @@ InitPostmasterChild(void)
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/*
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* Set reference point for stack-depth checking. This might seem
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* redundant in !EXEC_BACKEND builds; but it's not because the postmaster
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* launches its children from signal handlers, so we might be running on
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* an alternative stack.
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* redundant in !EXEC_BACKEND builds, but it's better to keep the depth
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* logic the same with and without that build option.
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*/
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(void) set_stack_base();
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