Suppress more variable-set-but-not-used warnings from clang 15.
Mop up assorted set-but-not-used warnings in the back branches.
This includes back-patching relevant fixes from commit 152c9f7b8
the rest of the way, but there are also several cases that did not
appear in HEAD. Some of those we'd fixed in a retail way but not
back-patched, and others I think just got rewritten out of existence
during nearby refactoring.
While here, also back-patch b1980f6d0 (PL/Tcl: Fix compiler warnings
with Tcl 8.6) into 9.2, so that that branch compiles warning-free
with modern Tcl.
Per project policy, this is a candidate for back-patching into
out-of-support branches: it suppresses annoying compiler warnings
but changes no behavior. Hence, back-patch all the way to 9.2.
Discussion: https://postgr.es/m/514615.1663615243@sss.pgh.pa.us
Branch
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REL_10_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/9c69e2640fa8297b08bc690912b44092435cd204
Modified Files
--------------
src/backend/optimizer/util/var.c | 3 ---
src/backend/utils/adt/varlena.c | 3 +--
2 files changed, 1 insertion(+), 5 deletions(-)
