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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 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
This commit is contained in:
Tom Lane 2022-09-21 13:52:38 -04:00
parent ca8fd341e1
commit c705646b75
2 changed files with 1 additions and 5 deletions
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3
src/backend/optimizer/util/var.c
View File

@ -705,16 +705,13 @@ flatten_join_alias_vars_mutator(Node *node,
RowExpr *rowexpr;
List *fields = NIL;
List *colnames = NIL;
AttrNumber attnum;
ListCell *lv;
ListCell *ln;
attnum = 0;
Assert(list_length(rte->joinaliasvars) == list_length(rte->eref->colnames));
forboth(lv, rte->joinaliasvars, ln, rte->eref->colnames)
{
newvar = (Node *) lfirst(lv);
attnum++;
/* Ignore dropped columns */
if (newvar == NULL)
continue;

3
src/backend/utils/adt/varlena.c
View File

@ -4192,7 +4192,6 @@ text_to_array_internal(PG_FUNCTION_ARGS)
* to search for occurrences of fldsep.
*/
TextPositionState state;
int fldnum;
int start_posn;
int end_posn;
int chunk_len;
@ -4232,7 +4231,7 @@ text_to_array_internal(PG_FUNCTION_ARGS)
/* start_ptr points to the start_posn'th character of inputstring */
start_ptr = VARDATA_ANY(inputstring);
for (fldnum = 1;; fldnum++) /* field number is 1 based */
for (;;)
{
CHECK_FOR_INTERRUPTS();