Re: [PATCH] Identify LWLocks in tracepoints

Peter Eisentraut <peter.eisentraut@enterprisedb.com> writes:
> On 05.05.21 00:15, Andres Freund wrote:
>> I'm now getting
>> /home/andres/src/postgresql/src/backend/storage/lmgr/lwlock.c: In function ‘LWLockAcquire’:
>> /home/andres/src/postgresql/src/backend/storage/lmgr/lwlock.c:1322:58: warning: suggest braces around empty body in
an‘if’ statement [-Wempty-body] 
>> 1322 |    TRACE_POSTGRESQL_LWLOCK_WAIT_START(T_NAME(lock), mode);
>> |                                                          ^

> What compiler are you using in this situation?

All of these buildfarm members are now showing this warning:

calliphoridae    gcc (Debian 10.1.0-6) 10.1.0
culicidae    gcc (Debian 10.1.0-6) 10.1.0
flaviventris    gcc (Debian 20200124-1) 10.0.1 20200124 (experimental)
francolin    gcc (Debian 10.1.0-6) 10.1.0
piculetœ    gcc (Debian 10.1.0-6) 10.1.0
rorqual        gcc (Debian 10.1.0-6) 10.1.0
serinus        gcc (Debian 20200124-1) 10.0.1 20200124 (experimental)
skink        gcc (Debian 10.1.0-6) 10.1.0

so there's your answer.

(I wonder why flaviventris and serinus are still using an "experimental"
compiler version that is now behind mainstream.)

            regards, tom lane