Fix for possible releasebuffer bug.

diff --git a/src/backend/catalog/indexing.c b/src/backend/catalog/indexing.c
index e13200c96b2c180c186c58a1d39846f7d9813564..504cca5c3f67df59befc3f5d474f32ad5016613d 100644 (file)
--- a/src/backend/catalog/indexing.c
+++ b/src/backend/catalog/indexing.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.22 1998/08/20 22:07:36 momjian Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.23 1998/08/30 23:25:55 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -227,31 +227,26 @@ CatalogIndexFetchTuple(Relation heapRelation,
 {
    IndexScanDesc sd;
    RetrieveIndexResult indexRes;
-   HeapTuple   tuple;
+   HeapTuple   tuple = NULL;
    Buffer      buffer;
    
    sd = index_beginscan(idesc, false, num_keys, skey);
-   tuple = (HeapTuple) NULL;
-   do
+   while ((indexRes = index_getnext(sd, ForwardScanDirection)))
    {
-       indexRes = index_getnext(sd, ForwardScanDirection);
-       if (indexRes)
-       {
-           ItemPointer iptr;
+       ItemPointer iptr;
 
-           iptr = &indexRes->heap_iptr;
-           tuple = heap_fetch(heapRelation, SnapshotNow, iptr, &buffer);
-           pfree(indexRes);
-       }
-       else
+       iptr = &indexRes->heap_iptr;
+       tuple = heap_fetch(heapRelation, SnapshotNow, iptr, &buffer);
+       pfree(indexRes);
+       if (HeapTupleIsValid(tuple))
            break;
-   } while (!HeapTupleIsValid(tuple));
+   } 
 
    if (HeapTupleIsValid(tuple))
+   {
        tuple = heap_copytuple(tuple);
-
-   if (BufferIsValid(buffer))
        ReleaseBuffer(buffer);
+   }
 
    index_endscan(sd);
    pfree(sd);
@@ -333,7 +328,7 @@ ProcedureOidIndexScan(Relation heapRelation, Oid procId)
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_OIDEQ,
-                          (Datum) procId);
+                          ObjectIdGetDatum(procId));
 
    idesc = index_openr(ProcedureOidIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
@@ -359,7 +354,7 @@ ProcedureNameIndexScan(Relation heapRelation,
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_NAMEEQ,
-                          (Datum) procName);
+                          PointerGetDatum(procName));
 
    ScanKeyEntryInitialize(&skey[1],
                           (bits16) 0x0,
@@ -371,7 +366,7 @@ ProcedureNameIndexScan(Relation heapRelation,
                           (bits16) 0x0,
                           (AttrNumber) 3,
                           (RegProcedure) F_OID8EQ,
-                          (Datum) argTypes);
+                          PointerGetDatum(argTypes));
 
    idesc = index_openr(ProcedureNameIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 3);
@@ -394,7 +389,7 @@ ProcedureSrcIndexScan(Relation heapRelation, text *procSrc)
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_TEXTEQ,
-                          (Datum) procSrc);
+                          PointerGetDatum(procSrc));
 
    idesc = index_openr(ProcedureSrcIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
@@ -415,7 +410,7 @@ TypeOidIndexScan(Relation heapRelation, Oid typeId)
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_OIDEQ,
-                          (Datum) typeId);
+                          ObjectIdGetDatum(typeId));
 
    idesc = index_openr(TypeOidIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
@@ -436,7 +431,7 @@ TypeNameIndexScan(Relation heapRelation, char *typeName)
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_NAMEEQ,
-                          (Datum) typeName);
+                          PointerGetDatum(typeName));
 
    idesc = index_openr(TypeNameIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);
@@ -477,7 +472,7 @@ ClassOidIndexScan(Relation heapRelation, Oid relId)
                           (bits16) 0x0,
                           (AttrNumber) 1,
                           (RegProcedure) F_OIDEQ,
-                          (Datum) relId);
+                          ObjectIdGetDatum(relId));
 
    idesc = index_openr(ClassOidIndex);
    tuple = CatalogIndexFetchTuple(heapRelation, idesc, skey, 1);

diff --git a/src/backend/parser/scan.c b/src/backend/parser/scan.c
index 0b9e8b41542e784df90ee1822a3ed92b097f5807..f7c3eb80b98b059a8fd3ec6d5acddab3e2a5a292 100644 (file)
--- a/src/backend/parser/scan.c
+++ b/src/backend/parser/scan.c
@@ -1,7 +1,7 @@
 /* A lexical scanner generated by flex */
 
 /* Scanner skeleton version:
- * $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
  */
 
 #define FLEX_SCANNER
@@ -555,7 +555,7 @@ char *yytext;
  *
  *
  * IDENTIFICATION
- *   $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.24 1998/08/23 22:25:51 momjian Exp $
+ *   $Header: /cvsroot/pgsql/src/backend/parser/Attic/scan.c,v 1.25 1998/08/30 23:25:56 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -1181,6 +1181,8 @@ YY_RULE_SETUP
                        if (isascii((unsigned char)yytext[i]) &&
                            isupper(yytext[i]))
                            yytext[i] = tolower(yytext[i]);
+                   if (i >= NAMEDATALEN)
+                       yytext[NAMEDATALEN-1] = '\0';
 
                    keyword = ScanKeywordLookup((char*)yytext);
                    if (keyword != NULL) {
@@ -1195,7 +1197,7 @@ YY_RULE_SETUP
    YY_BREAK
 case 34:
 YY_RULE_SETUP
-#line 337 "scan.l"
+#line 339 "scan.l"
 {
                    char* endptr;
 
@@ -1217,7 +1219,7 @@ YY_RULE_SETUP
    YY_BREAK
 case 35:
 YY_RULE_SETUP
-#line 355 "scan.l"
+#line 357 "scan.l"
 {
                    char* endptr;
 
@@ -1232,7 +1234,7 @@ YY_RULE_SETUP
    YY_BREAK
 case 36:
 YY_RULE_SETUP
-#line 366 "scan.l"
+#line 368 "scan.l"
 {
                    char* endptr;
 
@@ -1253,7 +1255,7 @@ YY_RULE_SETUP
    YY_BREAK
 case 37:
 YY_RULE_SETUP
-#line 383 "scan.l"
+#line 385 "scan.l"
 {
                    char* endptr;
 
@@ -1267,7 +1269,7 @@ YY_RULE_SETUP
    YY_BREAK
 case 38:
 YY_RULE_SETUP
-#line 395 "scan.l"
+#line 397 "scan.l"
 {
                    int i;
                    ScanKeyword     *keyword;
@@ -1276,6 +1278,8 @@ YY_RULE_SETUP
                        if (isascii((unsigned char)yytext[i]) &&
                            isupper(yytext[i]))
                            yytext[i] = tolower(yytext[i]);
+                   if (i >= NAMEDATALEN)
+                       yytext[NAMEDATALEN-1] = '\0';
 
                    keyword = ScanKeywordLookup((char*)yytext);
                    if (keyword != NULL) {
@@ -1290,20 +1294,20 @@ YY_RULE_SETUP
    YY_BREAK
 case 39:
 YY_RULE_SETUP
-#line 414 "scan.l"
+#line 418 "scan.l"
 { /* ignore */ }
    YY_BREAK
 case 40:
 YY_RULE_SETUP
-#line 416 "scan.l"
+#line 420 "scan.l"
 { return (yytext[0]); }
    YY_BREAK
 case 41:
 YY_RULE_SETUP
-#line 418 "scan.l"
+#line 422 "scan.l"
 ECHO;
    YY_BREAK
-#line 1307 "lex.yy.c"
+#line 1311 "lex.yy.c"
            case YY_STATE_EOF(INITIAL):
            case YY_STATE_EOF(xb):
            case YY_STATE_EOF(xc):
@@ -2189,7 +2193,7 @@ int main()
    return 0;
    }
 #endif
-#line 418 "scan.l"
+#line 422 "scan.l"
 
 
 void yyerror(char message[])