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pgsql: Don't call fwrite() with len == 0 when writing out relcache init - Mailing list pgsql-committers

From	Andres Freund
Subject	pgsql: Don't call fwrite() with len == 0 when writing out relcache init
Date	March 23, 2022 20:36:13
Msg-id	E1nX7iG-0014Vc-N9@gemulon.postgresql.org Whole thread Raw
List	pgsql-committers

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Don't call fwrite() with len == 0 when writing out relcache init file.

Noticed via -fsanitize=undefined.

Backpatch to all branches, for the same reasons as 46ab07ffda9.

Discussion: https://postgr.es/m/20220323173537.ll7klrglnp4gn2um@alap3.anarazel.de
Backpatch: 10-

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/1c6bb380e5aba195204a9c6d0b4713bd1b3dec9c

Modified Files
--------------
src/backend/utils/cache/relcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

pgsql-committers by date:

From: Andres Freund
Date: 23 March 2022, 19:45:27
Subject: pgsql: configure: check for dlsym instead of dlopen.

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Date: 24 March 2022, 00:37:54
Subject: pgsql: Add some basic regression tests for pg_freespacemap

pgsql: Don't call fwrite() with len == 0 when writing out relcache init - Mailing list pgsql-committers

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