pgsql: Emit dummy statements for probes.d probes when disabled

From: Peter Eisentraut <peter(at)eisentraut(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: Emit dummy statements for probes.d probes when disabled
Date: 2021-05-10 09:41:07
Message-ID: E1lg2PT-0002bt-3m@gemulon.postgresql.org
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Emit dummy statements for probes.d probes when disabled

When building without --enable-dtrace, emit dummy

do {} while (0)

statements for the stubbed-out TRACE_POSTGRESQL_foo() macros
instead of empty macros that totally elide the original probe
statement.

This fixes the

warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

introduced by b94409a02f.

Author: Craig Ringer <craig(dot)ringer(at)2ndquadrant(dot)com>
Discussion: https://www.postgresql.org/message-id/flat/20210504221531.cfvpmmdfsou6eitb%40alap3.anarazel.de

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/fa8fbadb934b4727a7aeff074995e799f4685a75

Modified Files
--------------
src/backend/utils/Gen_dummy_probes.pl | 6 ++++++
src/backend/utils/Gen_dummy_probes.sed | 1 +
2 files changed, 7 insertions(+)

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