pgsql: Assert only valid flag bits are passed to visibilitymap_set()

Assert only valid flag bits are passed to visibilitymap_set()

If visibilitymap_set() is called with flags containing a higher bit than
VISIBILITYMAP_ALL_FROZEN, the state of neighboring pages is affected. While
there was an assertion that *some* valid bits were set, it did not check
that *only* valid bits were. Change that.

Discussion: https://postgr.es/m/20230331043300.gux3s5wzrapqi4oe@awork3.anarazel.de

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/a88a18b1250b9e6b40536e4dec04d32d655b8140

Modified Files
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src/backend/access/heap/visibilitymap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)