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Fix pg_rewind debug output to print the source timeline history

getTimelineHistory() is called twice, to read the source and thetarget timeline history files. However, the loop to print the filewith the --debug option used the wrong variable when dealing with thesource. As a result, the source's history was always printed as empty.Spotted while debugging bug #18575, but this does not fix that bug,just the debugging output. Backpatch to all supported versions.Discussion:https://www.postgresql.org/message-id/092dd515-b7b4-4fd0-8407-ceca2f02f6ec@iki.fi

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src/bin/pg_rewind
- pg_rewind.c

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`‎src/bin/pg_rewind/pg_rewind.c‎`

Lines changed: 2 additions & 4 deletions

Original file line number	Diff line number	Diff line change
`@@ -882,6 +882,7 @@ getTimelineHistory(TimeLineID tli, bool is_source, int *nentries)`
`882`	`882`	`pg_free(histfile);`
`883`	`883`	`}`
`884`	`884`
	`885`	`+/* In debugging mode, print what we read */`
`885`	`886`	`if (debug)`
`886`	`887`	`{`
`887`	`888`	`inti;`
`@@ -891,10 +892,7 @@ getTimelineHistory(TimeLineID tli, bool is_source, int *nentries)`
`891`	`892`	`else`
`892`	`893`	`pg_log_debug("Target timeline history:");`
`893`	`894`
`894`		`-/*`
`895`		`- * Print the target timeline history.`
`896`		`- */`
`897`		`-for (i=0;i<targetNentries;i++)`
	`895`	`+for (i=0;i<*nentries;i++)`
`898`	`896`	`{`
`899`	`897`	`TimeLineHistoryEntry*entry;`
`900`	`898`

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Commita7bf3e6

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`‎src/bin/pg_rewind/pg_rewind.c‎`

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