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Commita0c9685

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Fix assertion failure when running pgbench -s.
If there is the WAL page that the continuation WAL record just fits within(i.e., the continuation record ends just at the end of the page) andthe LSN in such page is specified with -s option, previously pg_waldumpcaused an assertion failure. The cause of this assertion failure was thatXLogFindNextRecord() that pg_waldump -s calls mistakenly handledsuch special WAL page.This commit changes XLogFindNextRecord() so that it can handlesuch WAL page correctly.Back-patch to all supported versions.Author: Andrey LepikhovReviewed-by: Fujii Masao, Michael PaquierDiscussion:https://postgr.es/m/99303554-5dd5-06e6-f943-b3005ccd6edd@postgrespro.ru
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‎src/backend/access/transam/xlogreader.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -966,7 +966,7 @@ XLogFindNextRecord(XLogReaderState *state, XLogRecPtr RecPtr)
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*
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* Note that record headers are MAXALIGN'ed
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*/
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if (MAXALIGN(header->xlp_rem_len)> (XLOG_BLCKSZ-pageHeaderSize))
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if (MAXALIGN(header->xlp_rem_len) >= (XLOG_BLCKSZ-pageHeaderSize))
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tmpRecPtr=targetPagePtr+XLOG_BLCKSZ;
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else
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{

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