From c943e2aae7c59c673d502bbb243b57469be4c75f Mon Sep 17 00:00:00 2001 From: Heikki Linnakangas Date: Thu, 8 Aug 2024 10:20:25 +0300 Subject: [PATCH] Fix pg_rewind debug output to print the source timeline history getTimelineHistory() is called twice, to read the source and the target timeline history files. However, the loop to print the file with the --debug option used the wrong variable when dealing with the source. 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 --- src/bin/pg_rewind/pg_rewind.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/src/bin/pg_rewind/pg_rewind.c b/src/bin/pg_rewind/pg_rewind.c index 789f2ffe2c2..2b487e241c5 100644 --- a/src/bin/pg_rewind/pg_rewind.c +++ b/src/bin/pg_rewind/pg_rewind.c @@ -645,6 +645,7 @@ getTimelineHistory(ControlFileData *controlFile, int *nentries) pg_free(histfile); } + /* In debugging mode, print what we read */ if (debug) { int i; @@ -656,10 +657,7 @@ getTimelineHistory(ControlFileData *controlFile, int *nentries) else Assert(false); - /* - * Print the target timeline history. - */ - for (i = 0; i < targetNentries; i++) + for (i = 0; i < *nentries; i++) { TimeLineHistoryEntry *entry;