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remove redundant initializations

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Reported-by: Ranier Vilela

Discussion: https://postgr.es/m/CAEudQAo1+AcGppxDSg8k+zF4+Kv+eJyqzEDdbpDg58-=MQcerQ@mail.gmail.com

Author: Ranier Vilela

Backpatch-through: master
This commit is contained in:
Bruce Momjian 2020-09-03 22:57:35 -04:00
parent 844c05abc3
commit e36e936e0e
5 changed files with 7 additions and 6 deletions
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1
src/backend/access/gist/gistxlog.c
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@ -405,7 +405,6 @@ gistRedoPageReuse(XLogReaderState *record)
* logged value is very old, so that XID wrap-around already happened * logged value is very old, so that XID wrap-around already happened
* on it, there can't be any snapshots that still see it. * on it, there can't be any snapshots that still see it.
*/ */
nextXid = ReadNextFullTransactionId();
diff = U64FromFullTransactionId(nextXid) - diff = U64FromFullTransactionId(nextXid) -
U64FromFullTransactionId(latestRemovedFullXid); U64FromFullTransactionId(latestRemovedFullXid);
if (diff < MaxTransactionId / 2) if (diff < MaxTransactionId / 2)

2
src/backend/catalog/heap.c
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@ -3436,7 +3436,7 @@ List *
heap_truncate_find_FKs(List *relationIds) heap_truncate_find_FKs(List *relationIds)
{ {
List *result = NIL; List *result = NIL;
List *oids = list_copy(relationIds); List *oids;
List *parent_cons; List *parent_cons;
ListCell *cell; ListCell *cell;
ScanKeyData key; ScanKeyData key;

6
src/backend/storage/smgr/md.c
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@ -734,9 +734,11 @@ mdwrite(SMgrRelation reln, ForkNumber forknum, BlockNumber blocknum,
BlockNumber BlockNumber
mdnblocks(SMgrRelation reln, ForkNumber forknum) mdnblocks(SMgrRelation reln, ForkNumber forknum)
{ {
MdfdVec *v = mdopenfork(reln, forknum, EXTENSION_FAIL); MdfdVec *v;
BlockNumber nblocks; BlockNumber nblocks;
BlockNumber segno = 0; BlockNumber segno;
mdopenfork(reln, forknum, EXTENSION_FAIL);
/* mdopen has opened the first segment */ /* mdopen has opened the first segment */
Assert(reln->md_num_open_segs[forknum] > 0); Assert(reln->md_num_open_segs[forknum] > 0);

2
src/backend/utils/adt/json.c
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@ -990,7 +990,7 @@ catenate_stringinfo_string(StringInfo buffer, const char *addon)
Datum Datum
json_build_object(PG_FUNCTION_ARGS) json_build_object(PG_FUNCTION_ARGS)
{ {
int nargs = PG_NARGS(); int nargs;
int i; int i;
const char *sep = ""; const char *sep = "";
StringInfo result; StringInfo result;

2
src/backend/utils/mmgr/mcxt.c
View File

@ -476,7 +476,7 @@ MemoryContextMemAllocated(MemoryContext context, bool recurse)
if (recurse) if (recurse)
{ {
MemoryContext child = context->firstchild; MemoryContext child;
for (child = context->firstchild; for (child = context->firstchild;
child != NULL; child != NULL;