Don't call fwrite() with len == 0 when writing out relcache init file.
authorAndres Freund <andres@anarazel.de>
Wed, 23 Mar 2022 20:05:25 +0000 (13:05 -0700)
committerAndres Freund <andres@anarazel.de>
Wed, 23 Mar 2022 20:05:25 +0000 (13:05 -0700)
commit1c6bb380e5aba195204a9c6d0b4713bd1b3dec9c
treedc50a73f514ead5a8747663df8056d133328b4f8
parente71c76fcab8d00defe9a7a608facdd9663f7bcbf
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-
src/backend/utils/cache/relcache.c