Re: gcc 15 "array subscript 0" warning at level -O3
Andres Freund <andres@anarazel.de>
From: Andres Freund <andres@anarazel.de>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2025-07-09T23:20:20Z
Lists: pgsql-hackers
Hi, On 2025-06-05 15:50:48 -0400, Tom Lane wrote: > Andres Freund <andres@anarazel.de> writes: > >> I've been wondering about adding wrapping something like that in a > >> pg_assume(expr) or such. > > > I've been once more annoyed by this warning. Here's a prototype for the > > approach outlined above. > > Looks plausible by eyeball. I did notice a typo in the comment: > > + * pg_assume(expr) stats that we assume `expr` to evaluate to true. In assert > > s/stats/states/, I think you meant. Thanks. I pushed it with that tweak and a bit of minor comment burnishing. Glad to see the last of that warning. Greetings, Andres Freund
Commits
-
Use pg_assume() to avoid compiler warning below exec_set_found()
- 48a23f6eae71 19 (unreleased) landed
-
Add pg_assume(expr) macro
- d65eb5b1b84e 19 (unreleased) landed