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Commit88c947c

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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 commit152c9f7the rest of the way, but there are also several cases that did notappear in HEAD. Some of those we'd fixed in a retail way but notback-patched, and others I think just got rewritten out of existenceduring nearby refactoring.While here, also back-patchb1980f6 (PL/Tcl: Fix compiler warningswith Tcl 8.6) into 9.2, so that that branch compiles warning-freewith modern Tcl.Per project policy, this is a candidate for back-patching intoout-of-support branches: it suppresses annoying compiler warningsbut changes no behavior. Hence, back-patch all the way to 9.2.Discussion:https://postgr.es/m/514615.1663615243@sss.pgh.pa.us
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‎src/backend/optimizer/util/var.c

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Original file line numberDiff line numberDiff line change
@@ -761,16 +761,13 @@ flatten_join_alias_vars_mutator(Node *node,
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RowExpr*rowexpr;
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List*fields=NIL;
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List*colnames=NIL;
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AttrNumberattnum;
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ListCell*lv;
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ListCell*ln;
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attnum=0;
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Assert(list_length(rte->joinaliasvars)==list_length(rte->eref->colnames));
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forboth(lv,rte->joinaliasvars,ln,rte->eref->colnames)
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{
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newvar= (Node*)lfirst(lv);
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attnum++;
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/* Ignore dropped columns */
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if (newvar==NULL)
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continue;

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