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Remove bms_first_member().

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This function has been semi-deprecated ever since we invented
bms_next_member().  Its habit of scribbling on the input bitmapset
isn't great, plus for sufficiently large bitmapsets it would take
O(N^2) time to complete a loop.  Now we have the additional problem
that reducing the input to empty while leaving it still accessible
would violate a planned invariant.  So let's just get rid of it,
after updating the few extant callers to use bms_next_member().

Patch by me; thanks to Nathan Bossart and Richard Guo for review.

Discussion: https://postgr.es/m/1159933.1677621588@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2023-03-02 11:34:29 -05:00
parent 2f80c95740
commit 462bb7f128
9 changed files with 23 additions and 70 deletions
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2
src/backend/parser/parse_expr.c
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@ -2759,7 +2759,7 @@ make_row_comparison_op(ParseState *pstate, List *opname,
* them ... this coding arbitrarily picks the lowest btree strategy
* number.
*/
i = bms_first_member(strats);
i = bms_next_member(strats, -1);
if (i < 0)
{
/* No common interpretation, so fail */