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Fix pg_rewind debug output to print the source timeline history

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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
This commit is contained in:
Heikki Linnakangas 2024-08-08 10:20:25 +03:00
parent e56ccc8e42
commit 49dc191bd1
1 changed files with 2 additions and 4 deletions
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6
src/bin/pg_rewind/pg_rewind.c
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@ -882,6 +882,7 @@ getTimelineHistory(TimeLineID tli, bool is_source, int *nentries)
pg_free(histfile);
}
/* In debugging mode, print what we read */
if (debug)
{
int i;
@ -891,10 +892,7 @@ getTimelineHistory(TimeLineID tli, bool is_source, int *nentries)
else
pg_log_debug("Target timeline history:");
/*
* Print the target timeline history.
*/
for (i = 0; i < targetNentries; i++)
for (i = 0; i < *nentries; i++)
{
TimeLineHistoryEntry *entry;