Le Thu, Sep 12, 2024 at 01:38:11PM -0400, Tom Lane a écrit : > =?iso-8859-1?Q?Fran=E7ois?= SIMON <francois.simon@xxxxxxx> writes: > > So the problem seems to come from xlc, and only at initdb step. > > I can see that initdb runs a backend postgres in single user mode. > > And this is this backend, when compiled with xlc, that shows : > > FATAL: permission denied for table pg_description > > Yeah. This seems like it must be an xlc code-generation bug. > It's got nothing to do with filesystem permissions: you're failing > an ACL check at the logical "table" level, which you should not > be because single-user mode implies superuser permissions. > > We do have one buildfarm member building with 64-bit xlc on > AIX 7.1: > > https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=hornet&dt=2024-09-11%2003%3A51%3A02 > > I see that that uses a bunch of odd CFLAGS, but they look like they > are mostly to suppress compiler warnings. Another important bit of > the recipe for AIX is -D_LARGE_FILES=1, but I'm not sure that that > would have any impact during initdb (since we're not dealing with > any large files at that point). > > You could perhaps try different -O optimization levels. Also > make sure your xlc is up-to-date. Thank you for all this information. Unfortunately I haven't obtained any better results yet. I tried -O2, -O3, with or without -D_LARGE_FILES=1, xlc_r instead of xlc, and all the same flags as the buildfarm member. I will try with another version of xlc if possible. François > > regards, tom lane
