On Tue, Aug 5, 2025 at 11:34 AM Tom Lane <t...@sss.pgh.pa.us> wrote: > > Masahiko Sawada <sawada.m...@gmail.com> writes: > > I got the following compiler warning: > > > % make -C src/backend/storage/large_object > > inv_api.c: In function ‘inv_write’: > > inv_api.c:565:29: warning: ‘workbuf’ may be used uninitialized > > [-Wmaybe-uninitialized] > > 565 | char *workb = VARDATA(&workbuf.hdr); > > | ^~~~~~~~~~~~~~~~~~~~~ > > > I've not fully investigated the root cause but commit e035863c9a0 > > presumably is the culprit. FYI I'm using gcc 14.2.1. > > Interesting. I did not see such warnings with gcc 14.3.1, 15.1.1, > nor older gcc versions. Must be something peculiar to 14.2.
Hmm, I got the same warning with 14.3.1 (exact version shown below) so probably something is strange on my end: % gcc --version gcc (GCC) 14.3.1 20250805 > Theoretically this shouldn't be necessary, since VARDATA() > does not touch the contents of the pointed-to object. Right. I'll do more research. Regards, -- Masahiko Sawada Amazon Web Services: https://aws.amazon.com
