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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2022-01-23 11:09:00 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2022-01-23 11:09:43 -0500 |
| commit | d9a81e8671897340dcfec2d2365def9972d917d0 (patch) | |
| tree | 9ee30c4072c7494491a4d266525629a2a4cd5dfb /src | |
| parent | a3eb08b809a4b9e348efb0bae9c2834b71d53273 (diff) | |
Suppress variable-set-but-not-used warning from clang 13.
In the normal configuration where GEQO_DEBUG isn't defined,
recent clang versions have started to complain that geqo_main.c
accumulates the edge_failures count but never does anything
with it. As a minimal back-patchable fix, insert a void cast
to silence this warning. (I'd speculated about ripping out the
GEQO_DEBUG logic altogether, but I don't think we'd wish to
back-patch that.)
Per recently-established project policy, this is a candidate
for back-patching into out-of-support branches: it suppresses
an annoying compiler warning but changes no behavior. Hence,
back-patch all the way to 9.2.
Discussion: https://postgr.es/m/CA+hUKGLTSZQwES8VNPmWO9AO0wSeLt36OCPDAZTccT1h7Q7kTQ@mail.gmail.com
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/optimizer/geqo/geqo_main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/backend/optimizer/geqo/geqo_main.c b/src/backend/optimizer/geqo/geqo_main.c index 86213ac5a09..eaa7e654263 100644 --- a/src/backend/optimizer/geqo/geqo_main.c +++ b/src/backend/optimizer/geqo/geqo_main.c @@ -227,12 +227,17 @@ geqo(PlannerInfo *root, int number_of_rels, List *initial_rels) } -#if defined(ERX) && defined(GEQO_DEBUG) +#if defined(ERX) +#if defined(GEQO_DEBUG) if (edge_failures != 0) elog(LOG, "[GEQO] failures: %d, average: %d", edge_failures, (int) number_generations / edge_failures); else elog(LOG, "[GEQO] no edge failures detected"); +#else + /* suppress variable-set-but-not-used warnings from some compilers */ + (void) edge_failures; +#endif #endif #if defined(CX) && defined(GEQO_DEBUG) |