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Commitd2965f6

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Introduce XLogRecPtrIsValid()
XLogRecPtrIsInvalid() is inconsistent with the affirmative form ofmacros used for other datatypes, and leads to awkward double negativesin a few places. This commit introduces XLogRecPtrIsValid(), whichallows code to be written more naturally.This patch only adds the new macro. XLogRecPtrIsInvalid() is left inplace, and all existing callers remain untouched. This means allsupported branches can accept hypothetical bug fixes that use the newmacro, and at the same time any code that compiled with the originalformulation will continue to silently compile just fine.Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>Backpatch-through: 13Discussion:https://postgr.es/m/aQB7EvGqrbZXrMlg@ip-10-97-1-34.eu-west-3.compute.internal
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‎src/include/access/xlogdefs.h‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -25,7 +25,8 @@ typedef uint64 XLogRecPtr;
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* WAL segment, initializing the first WAL page at WAL segment size, so no XLOG
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* record can begin at zero.
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*/
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#defineInvalidXLogRecPtr0
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#defineInvalidXLogRecPtr0
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#defineXLogRecPtrIsValid(r)((r) != InvalidXLogRecPtr)
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#defineXLogRecPtrIsInvalid(r)((r) == InvalidXLogRecPtr)
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/*

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