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Re: Cleanup shadows variable warnings, round 1 - Mailing list pgsql-hackers

From Chao Li
Subject Re: Cleanup shadows variable warnings, round 1
Date
Msg-id CAEoWx2mrQt1ymaCFkrO2bKe01sdRBSxOWBCEPxzJU2k4TpNttg@mail.gmail.com
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In response to Re: Cleanup shadows variable warnings, round 1  (Peter Smith <smithpb2250@gmail.com>)
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On Dec 4, 2025, at 09:08, Peter Smith <smithpb2250@gmail.com> wrote:

FWIW... A few more review comments for v3.

//////////
Patch v3-0001.
//////////

This is actually 0002.


======
src/backend/access/gist/gistbuild.c

2.1.
OK, but should you take it 1 step further?

BEFORE
foreach(lc, splitinfo)
{
 GISTPageSplitInfo *si = lfirst(lc);
AFTER
foreach_ptr(GISTPageSplitInfo, si, splitinfo)
{

======
src/backend/commands/schemacmds.c


Fixed.

2.2.
OK, but should you take it 1 step further?

BEFORE
foreach(parsetree_item, parsetree_list)
{
 Node    *substmt = (Node *) lfirst(parsetree_item);
AFTER
foreach_ptr(Node, substmt, parsetree_list)
{


Fixed.

======
src/backend/commands/statscmds.c

2.3.
OK, but I felt 'attnums_bms' might be a better replacement name than 'attnumsbm'


Fixed.

======
src/backend/executor/nodeValuesscan.c
2.4.
OK, but should you take it 1 step further?

BEFORE
foreach(lc, exprstatelist)
{
 ExprState  *exprstate = (ExprState *) lfirst(lc);
AFTER
foreach_ptr(ExprState, exprstate, exprstatelist)
{


Fixed.

======
src/backend/statistics/dependencies.c

2.5.
The other variable in other parts of this function had names like:
clause_expr
bool_expr
or_expr
stat_expr

So, perhaps your new names should be changed slightly to look more
similar to those?


Fixed.

======
src/backend/statistics/extended_stats.c

2.6.
This seems to be in the wrong patch because here you renamed the local
var, not the inner one, as the patch commit message says.


Moved to 0003.

======
src/backend/utils/adt/jsonpath_exec.c

2.7.
Wondering if 'vals' might be a better name than 'foundJV' (there is
already another JsonValueList vals elsewhere in this code).


Fixed.

======
src/bin/pgbench/pgbench.c

2.8.
Wondering if 'nskipped' is a better name than 'skips'.


The around variables all use “s”:
```
int64 skips = 0;
int64 serialization_failures = 0;
int64 deadlock_failures = 0;
int64 other_sql_failures = 0;
int64 retried = 0;
int64 retries = 0;
```

That’s why I used the “s” form.

All fixes are in v5.

Best regards,
--
Chao Li (Evan)
HighGo Software Co., Ltd.
https://www.highgo.com/




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