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Commita753e5d

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committed
Fix for possible releasebuffer bug.
1 parent6c49828 commita753e5d

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2 files changed

+34
-35
lines changed

2 files changed

+34
-35
lines changed

‎src/backend/catalog/indexing.c‎

Lines changed: 18 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.22 1998/08/20 22:07:36 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.23 1998/08/30 23:25:55 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -227,31 +227,26 @@ CatalogIndexFetchTuple(Relation heapRelation,
227227
{
228228
IndexScanDescsd;
229229
RetrieveIndexResultindexRes;
230-
HeapTupletuple;
230+
HeapTupletuple=NULL;
231231
Bufferbuffer;
232232

233233
sd=index_beginscan(idesc, false,num_keys,skey);
234-
tuple= (HeapTuple)NULL;
235-
do
234+
while ((indexRes=index_getnext(sd,ForwardScanDirection)))
236235
{
237-
indexRes=index_getnext(sd,ForwardScanDirection);
238-
if (indexRes)
239-
{
240-
ItemPointeriptr;
236+
ItemPointeriptr;
241237

242-
iptr=&indexRes->heap_iptr;
243-
tuple=heap_fetch(heapRelation,SnapshotNow,iptr,&buffer);
244-
pfree(indexRes);
245-
}
246-
else
238+
iptr=&indexRes->heap_iptr;
239+
tuple=heap_fetch(heapRelation,SnapshotNow,iptr,&buffer);
240+
pfree(indexRes);
241+
if (HeapTupleIsValid(tuple))
247242
break;
248-
}while (!HeapTupleIsValid(tuple));
243+
}
249244

250245
if (HeapTupleIsValid(tuple))
246+
{
251247
tuple=heap_copytuple(tuple);
252-
253-
if (BufferIsValid(buffer))
254248
ReleaseBuffer(buffer);
249+
}
255250

256251
index_endscan(sd);
257252
pfree(sd);
@@ -333,7 +328,7 @@ ProcedureOidIndexScan(Relation heapRelation, Oid procId)
333328
(bits16)0x0,
334329
(AttrNumber)1,
335330
(RegProcedure)F_OIDEQ,
336-
(Datum)procId);
331+
ObjectIdGetDatum(procId));
337332

338333
idesc=index_openr(ProcedureOidIndex);
339334
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,1);
@@ -359,7 +354,7 @@ ProcedureNameIndexScan(Relation heapRelation,
359354
(bits16)0x0,
360355
(AttrNumber)1,
361356
(RegProcedure)F_NAMEEQ,
362-
(Datum)procName);
357+
PointerGetDatum(procName));
363358

364359
ScanKeyEntryInitialize(&skey[1],
365360
(bits16)0x0,
@@ -371,7 +366,7 @@ ProcedureNameIndexScan(Relation heapRelation,
371366
(bits16)0x0,
372367
(AttrNumber)3,
373368
(RegProcedure)F_OID8EQ,
374-
(Datum)argTypes);
369+
PointerGetDatum(argTypes));
375370

376371
idesc=index_openr(ProcedureNameIndex);
377372
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,3);
@@ -394,7 +389,7 @@ ProcedureSrcIndexScan(Relation heapRelation, text *procSrc)
394389
(bits16)0x0,
395390
(AttrNumber)1,
396391
(RegProcedure)F_TEXTEQ,
397-
(Datum)procSrc);
392+
PointerGetDatum(procSrc));
398393

399394
idesc=index_openr(ProcedureSrcIndex);
400395
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,1);
@@ -415,7 +410,7 @@ TypeOidIndexScan(Relation heapRelation, Oid typeId)
415410
(bits16)0x0,
416411
(AttrNumber)1,
417412
(RegProcedure)F_OIDEQ,
418-
(Datum)typeId);
413+
ObjectIdGetDatum(typeId));
419414

420415
idesc=index_openr(TypeOidIndex);
421416
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,1);
@@ -436,7 +431,7 @@ TypeNameIndexScan(Relation heapRelation, char *typeName)
436431
(bits16)0x0,
437432
(AttrNumber)1,
438433
(RegProcedure)F_NAMEEQ,
439-
(Datum)typeName);
434+
PointerGetDatum(typeName));
440435

441436
idesc=index_openr(TypeNameIndex);
442437
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,1);
@@ -477,7 +472,7 @@ ClassOidIndexScan(Relation heapRelation, Oid relId)
477472
(bits16)0x0,
478473
(AttrNumber)1,
479474
(RegProcedure)F_OIDEQ,
480-
(Datum)relId);
475+
ObjectIdGetDatum(relId));
481476

482477
idesc=index_openr(ClassOidIndex);
483478
tuple=CatalogIndexFetchTuple(heapRelation,idesc,skey,1);

‎src/backend/parser/scan.c‎

Lines changed: 16 additions & 12 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
11
/* A lexical scanner generated by flex */
22

33
/* Scanner skeleton version:
4-
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
4+
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
55
*/
66

77
#defineFLEX_SCANNER
@@ -555,7 +555,7 @@ char *yytext;
555555
*
556556
*
557557
* IDENTIFICATION
558-
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
558+
* $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
559559
*
560560
*-------------------------------------------------------------------------
561561
*/
@@ -1181,6 +1181,8 @@ YY_RULE_SETUP
11811181
if (isascii((unsignedchar)yytext[i])&&
11821182
isupper(yytext[i]))
11831183
yytext[i]=tolower(yytext[i]);
1184+
if (i >=NAMEDATALEN)
1185+
yytext[NAMEDATALEN-1]='\0';
11841186

11851187
keyword=ScanKeywordLookup((char*)yytext);
11861188
if (keyword!=NULL) {
@@ -1195,7 +1197,7 @@ YY_RULE_SETUP
11951197
YY_BREAK
11961198
case34:
11971199
YY_RULE_SETUP
1198-
#line337 "scan.l"
1200+
#line339 "scan.l"
11991201
{
12001202
char*endptr;
12011203

@@ -1217,7 +1219,7 @@ YY_RULE_SETUP
12171219
YY_BREAK
12181220
case35:
12191221
YY_RULE_SETUP
1220-
#line355 "scan.l"
1222+
#line357 "scan.l"
12211223
{
12221224
char*endptr;
12231225

@@ -1232,7 +1234,7 @@ YY_RULE_SETUP
12321234
YY_BREAK
12331235
case36:
12341236
YY_RULE_SETUP
1235-
#line366 "scan.l"
1237+
#line368 "scan.l"
12361238
{
12371239
char*endptr;
12381240

@@ -1253,7 +1255,7 @@ YY_RULE_SETUP
12531255
YY_BREAK
12541256
case37:
12551257
YY_RULE_SETUP
1256-
#line383 "scan.l"
1258+
#line385 "scan.l"
12571259
{
12581260
char*endptr;
12591261

@@ -1267,7 +1269,7 @@ YY_RULE_SETUP
12671269
YY_BREAK
12681270
case38:
12691271
YY_RULE_SETUP
1270-
#line395 "scan.l"
1272+
#line397 "scan.l"
12711273
{
12721274
inti;
12731275
ScanKeyword*keyword;
@@ -1276,6 +1278,8 @@ YY_RULE_SETUP
12761278
if (isascii((unsignedchar)yytext[i])&&
12771279
isupper(yytext[i]))
12781280
yytext[i]=tolower(yytext[i]);
1281+
if (i >=NAMEDATALEN)
1282+
yytext[NAMEDATALEN-1]='\0';
12791283

12801284
keyword=ScanKeywordLookup((char*)yytext);
12811285
if (keyword!=NULL) {
@@ -1290,20 +1294,20 @@ YY_RULE_SETUP
12901294
YY_BREAK
12911295
case39:
12921296
YY_RULE_SETUP
1293-
#line414 "scan.l"
1297+
#line418 "scan.l"
12941298
{/* ignore */ }
12951299
YY_BREAK
12961300
case40:
12971301
YY_RULE_SETUP
1298-
#line416 "scan.l"
1302+
#line420 "scan.l"
12991303
{return (yytext[0]); }
13001304
YY_BREAK
13011305
case41:
13021306
YY_RULE_SETUP
1303-
#line418 "scan.l"
1307+
#line422 "scan.l"
13041308
ECHO;
13051309
YY_BREAK
1306-
#line1307 "lex.yy.c"
1310+
#line1311 "lex.yy.c"
13071311
caseYY_STATE_EOF(INITIAL):
13081312
caseYY_STATE_EOF(xb):
13091313
caseYY_STATE_EOF(xc):
@@ -2189,7 +2193,7 @@ int main()
21892193
return0;
21902194
}
21912195
#endif
2192-
#line418 "scan.l"
2196+
#line422 "scan.l"
21932197

21942198

21952199
voidyyerror(charmessage[])

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