Assorted memory leak fixes. (CVS 1600)

FossilOrigin-Name: 07b90f3690768e852384fbbde0ba59e69e24d1da
2025-08-07 02:42:48 +03:00 · 2004-06-15 16:51:01 +00:00
parent b20e56b451
commit e00484002f
8 changed files with 68 additions and 42 deletions
--- a/22
+++ b/22
@@ -1,5 +1,5 @@
-C Memory\sleak\sfixes\sfor\stests\sin\sfile\sselect1.test.\s(CVS\s1599)
-D 2004-06-15T13:36:30
+C Assorted\smemory\sleak\sfixes.\s(CVS\s1600)
+D 2004-06-15T16:51:01
 F Makefile.in ab7b0d5118e2da97bac66be8684a1034e3500f5a
 F Makefile.linux-gcc a9e5a0d309fa7c38e7c14d3ecf7690879d3a5457
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -28,17 +28,17 @@ F src/attach.c 93b8ecec4a8d7b4e9f2479e2327d90c9d01765e8
 F src/auth.c 204e1e9c45e64315589bc8b62cba5d9de29b6a3c
 F src/btree.c 2852932e900b1b82e105fd651807f199a1d86f12
 F src/btree.h 32f96abef464cf8765b23ca669acfe90d191fcc5
-F src/build.c 916a84fa5f8bfd44dbe14c3d7c923dd07ee7373f
+F src/build.c 19fc5d0336a3fef973d62b3a1728078a319e4045
 F src/date.c 65b483caeb0e4dd663667d2f927caa058168ebff
 F src/delete.c 911221aadb35d610c84fadb32e71c52990827e58
 F src/encode.c a876af473d1d636faa3dca51c7571f2e007eea37
-F src/expr.c f9eafe34828ebc9040b4f0f4de2c1e6a0aee296b
+F src/expr.c 7c19fbc4495f8978439c20528cf3e070df068427
 F src/func.c 60bf9412807f95d4694863114ae7009d817de45f
 F src/hash.c 440c2f8cb373ee1b4e13a0988489c7cd95d55b6f
 F src/hash.h 762d95f1e567664d1eafc1687de755626be962fb
 F src/insert.c 68c7f3ddd6a7f1e5596d6996da1a2861b3789a3a
 F src/legacy.c ad23746f15f67e34577621b1875f639c94839e1f
-F src/main.c afb1200c096a90836676da2b3e873a2e0192c718
+F src/main.c da573d5b157dbb376349efcb4ff2cbe830f80c80
 F src/md5.c d77a389955759c8329bb357e3d71bac3d6eb710b
 F src/os.h 1cb5f0293a30288451fe3c0c73815cf208212ed1
 F src/os_common.h ba1b7306e16e2091718f2c48db0fe6c1d7a31bb8
@@ -51,7 +51,7 @@ F src/os_win.h 004eec47b1780fcaf07420ddc2072294b698d48c
 F src/pager.c 8e26112df058f73e718938ed07bdbf10ab942c0f
 F src/pager.h bc58d32a9dee464f7268fb68652c130a4216e438
 F src/parse.y 097438674976355a10cf177bd97326c548820b86
-F src/pragma.c e288bd122d3ca41ec2032475abde1ff5fa3095f4
+F src/pragma.c be8ed53611971f8c93f66cd31129af89e6d58997
 F src/printf.c 63b15f1ea9fe3daa066bb7430fd20d4a2d717dc8
 F src/random.c eff68e3f257e05e81eae6c4d50a51eb88beb4ff3
 F src/select.c 7036757825668f28e446fea3fc97775f16667f35
@@ -71,11 +71,11 @@ F src/update.c 6133c876aa126e1771cda165fd992bb0d2f8eb38
 F src/utf.c e16737b3fc4201bf7ce9bd8ced5250596aa31b76
 F src/util.c 90375fa253137562d536ccdd40b297f0fd7413fc
 F src/vacuum.c f9561c8095407a970af4e6a304b77c4083433d3e
-F src/vdbe.c 6f022fdf6f4e7273d6f6c39907e5ebd36b300e76
+F src/vdbe.c 208705994c0b3b160cb941a5a410838bd5559cf9
 F src/vdbe.h 46f74444a213129bc4b5ce40124dd8ed613b0cde
 F src/vdbeInt.h 4e636b1b6c18d1d85b085fe0e5a19d45ad85f382
 F src/vdbeapi.c ee350b552fc4c1c695b760f914f69e9c5556e829
-F src/vdbeaux.c 475fb88c1dc2dd170c0d218b0c9da3544f82db74
+F src/vdbeaux.c 3476058d13de206cc79cd7015c73e2bb4f37776e
 F src/vdbemem.c 1e7df5ed53bc05433c7d3fb28899cf2c82bd16ac
 F src/where.c 7fee7aeb9278f27324f228c55ab453b5f183b486
 F test/all.test 569a92a8ee88f5300c057cc4a8f50fbbc69a3242
@@ -222,7 +222,7 @@ F www/support.tcl 1801397edd271cc39a2aadd54e701184b5181248
 F www/tclsqlite.tcl 19191cf2a1010eaeff74c51d83fd5f5a4d899075
 F www/vdbe.tcl 59288db1ac5c0616296b26dce071c36cb611dfe9
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P e21a181376d4115c7dbe614f3f8a1fbf82d77c75
-R e061ee699c8f945d020155b0ecea44f4
+P 59db58ebd30cd7c79c32f5a725620e740eff661d
+R 8e2d649247d3314adc65f3fdcaa9f1fe
 U danielk1977
-Z 708f1b0423b9ce4121dae16049794fd8
+Z 80be8fa32cc9e1b101e22c8e2ab0aff3
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-59db58ebd30cd7c79c32f5a725620e740eff661d
+07b90f3690768e852384fbbde0ba59e69e24d1da
--- a/src/build.c
+++ b/src/build.c
@@ -23,7 +23,7 @@
 **     ROLLBACK
 **     PRAGMA
 **
-** $Id: build.c,v 1.218 2004/06/12 09:25:12 danielk1977 Exp $
+** $Id: build.c,v 1.219 2004/06/15 16:51:01 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -556,10 +556,11 @@ void sqlite3StartTable(

  pParse->sNameToken = *pName;
  zName = sqlite3TableNameFromToken(pName);
+  if( zName==0 ) return;
  if( SQLITE_OK!=sqlite3CheckObjectName(pParse, zName) ){
+    sqliteFree(zName);
    return;
  }
-  if( zName==0 ) return;
  if( db->init.iDb==1 ) isTemp = 1;
 #ifndef SQLITE_OMIT_AUTHORIZATION
  assert( (isTemp & 1)==isTemp );
@@ -599,6 +600,7 @@ void sqlite3StartTable(
      sqlite3ErrorMsg(pParse, "unable to open a temporary database "
        "file for storing temporary tables");
      pParse->nErr++;
+      sqliteFree(zName);
      return;
    }
    if( db->flags & !db->autoCommit ){
@@ -606,6 +608,7 @@ void sqlite3StartTable(
      if( rc!=SQLITE_OK ){
        sqlite3ErrorMsg(pParse, "unable to get a write lock on "
          "the temporary database file");
+        sqliteFree(zName);
        return;
      }
    }
@@ -629,6 +632,8 @@ void sqlite3StartTable(
  }
  pTable = sqliteMalloc( sizeof(Table) );
  if( pTable==0 ){
+    pParse->rc = SQLITE_NOMEM;
+    pParse->nErr++;
    sqliteFree(zName);
    return;
  }
@@ -2209,7 +2214,7 @@ void sqlite3CreateIndex(
 exit_create_index:
  if( pIndex ) sqliteFree(pIndex);
  sqlite3ExprListDelete(pList);
-  /* sqlite3SrcListDelete(pTable); */
+  sqlite3SrcListDelete(pTblName);
  sqliteFree(zName);
  return;
 }
--- a/src/expr.c
+++ b/src/expr.c
@@ -12,7 +12,7 @@
 ** This file contains routines used for analyzing expressions and
 ** for generating VDBE code that evaluates expressions in SQLite.
 **
-** $Id: expr.c,v 1.141 2004/06/12 09:25:14 danielk1977 Exp $
+** $Id: expr.c,v 1.142 2004/06/15 16:51:01 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -307,7 +307,10 @@ ExprList *sqlite3ExprListDup(ExprList *p){
  if( pNew==0 ) return 0;
  pNew->nExpr = pNew->nAlloc = p->nExpr;
  pNew->a = pItem = sqliteMalloc( p->nExpr*sizeof(p->a[0]) );
-  if( pItem==0 ) return 0;  /* Leaks memory after a malloc failure */
+  if( pItem==0 ){
+    sqliteFree(pNew);
+    return 0;
+  } 
  for(i=0; i<p->nExpr; i++, pItem++){
    Expr *pNewExpr, *pOldExpr;
    pItem->pExpr = pNewExpr = sqlite3ExprDup(pOldExpr = p->a[i].pExpr);
--- a/src/main.c
+++ b/src/main.c
@@ -14,7 +14,7 @@
 ** other files are for internal use by SQLite and should not be
 ** accessed by users of the library.
 **
-** $Id: main.c,v 1.221 2004/06/15 13:36:31 danielk1977 Exp $
+** $Id: main.c,v 1.222 2004/06/15 16:51:01 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -472,10 +472,18 @@ void sqlite3_close(sqlite *db){
  HashElem *i;
  int j;
  db->want_to_close = 1;
-  if( sqlite3SafetyCheck(db) || sqlite3SafetyOn(db) ){
+
+  /* FIX ME: db->magic may be set to SQLITE_MAGIC_CLOSED if the database
+  ** cannot be opened for some reason. So this routine needs to run in
+  ** that case. But maybe there should be an extra magic value for the
+  ** "failed to open" state.
+  */
+  if( db->magic!=SQLITE_MAGIC_CLOSED && 
+      (sqlite3SafetyCheck(db) || sqlite3SafetyOn(db)) ){
    /* printf("DID NOT CLOSE\n"); fflush(stdout); */
    return;
  }
+
  db->magic = SQLITE_MAGIC_CLOSED;
  for(j=0; j<db->nDb; j++){
    struct Db *pDb = &db->aDb[j];
@@ -1048,6 +1056,7 @@ int sqlite3_prepare16(
    int chars_parsed = sqlite3utf8CharLen(zSql8, zTail8-zSql8);
    *pzTail = (u8 *)zSql + sqlite3utf16ByteLen(zSql, chars_parsed);
  }
+  sqliteFree(zSql8);
 
  return rc;
 }
--- a/src/pragma.c
+++ b/src/pragma.c
@@ -11,7 +11,7 @@
 *************************************************************************
 ** This file contains code used to implement the PRAGMA command.
 **
-** $Id: pragma.c,v 1.43 2004/06/12 00:42:35 danielk1977 Exp $
+** $Id: pragma.c,v 1.44 2004/06/15 16:51:01 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include <ctype.h>
@@ -178,9 +178,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    sqlite3Dequote(zRight);
  }
  if( sqlite3AuthCheck(pParse, SQLITE_PRAGMA, zLeft, zRight, 0) ){
-    sqliteFree(zLeft);
-    sqliteFree(zRight);
-    return;
+    goto pragma_out;
  }
 
  /*
@@ -212,7 +210,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    int addr;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      sqlite3VdbeSetNumCols(v, 1);
@@ -255,7 +253,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    };
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      int size = db->cache_size;;
@@ -309,7 +307,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    int addr;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      sqlite3VdbeSetNumCols(v, 1);
@@ -356,7 +354,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    };
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      sqlite3VdbeSetNumCols(v, 1);
@@ -392,7 +390,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    Table *pTab;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    pTab = sqlite3FindTable(db, zRight, 0);
    if( pTab ){
@@ -424,7 +422,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    Table *pTab;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    pIdx = sqlite3FindIndex(db, zRight, 0);
    if( pIdx ){
@@ -450,7 +448,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    Table *pTab;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    pTab = sqlite3FindTable(db, zRight, 0);
    if( pTab ){
@@ -479,7 +477,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    Table *pTab;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    pTab = sqlite3FindTable(db, zRight, 0);
    if( pTab ){
@@ -515,7 +513,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    int i;
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    sqlite3VdbeSetNumCols(v, 3);
    sqlite3VdbeSetColName(v, 0, "seq", P3_STATIC);
@@ -550,7 +548,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    };
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      sqlite3VdbeAddOp(v, OP_Integer, db->temp_store, 0);
@@ -579,7 +577,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
      { OP_Callback,    1, 0,        0}};
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( pRight->z==pLeft->z ){
      sqlite3VdbeSetNumCols(v, 1);
@@ -598,7 +596,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    extern void sqlite3ParserTrace(FILE*, char *);
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    if( getBoolean(zRight) ){
      sqlite3ParserTrace(stdout, "parser: ");
@@ -634,7 +632,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    /* Initialize the VDBE program */
    if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
      pParse->nErr++;
-      return;
+      goto pragma_out;
    }
    sqlite3VdbeSetNumCols(v, 1);
    sqlite3VdbeSetColName(v, 0, "integrity_check", P3_STATIC);
@@ -655,7 +653,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
        sqlite3VdbeAddOp(v, OP_Integer, pTab->tnum, 0);
        cnt++;
        for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
-          if( sqlite3CheckIndexCollSeq(pParse, pIdx) ) return;
+          if( sqlite3CheckIndexCollSeq(pParse, pIdx) ) goto pragma_out;
          sqlite3VdbeAddOp(v, OP_Integer, pIdx->tnum, 0);
          cnt++;
        }
@@ -783,7 +781,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
    if( pRight->z==pLeft->z ){    /* "PRAGMA encoding" */
      if( SQLITE_OK!=sqlite3ReadSchema(pParse->db, &pParse->zErrMsg) ){
        pParse->nErr++;
-        return;
+        goto pragma_out;
      }
      sqlite3VdbeSetNumCols(v, 1);
      sqlite3VdbeSetColName(v, 0, "encoding", P3_STATIC);
@@ -848,6 +846,7 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
 #endif

  {}
+pragma_out:
  sqliteFree(zLeft);
  sqliteFree(zRight);
 }
--- a/src/vdbe.c
+++ b/src/vdbe.c
@@ -43,7 +43,7 @@
 ** in this file for details.  If in doubt, do not deviate from existing
 ** commenting and indentation practices when changing or adding code.
 **
-** $Id: vdbe.c,v 1.374 2004/06/15 13:36:37 danielk1977 Exp $
+** $Id: vdbe.c,v 1.375 2004/06/15 16:51:01 danielk1977 Exp $
 */
 #include "sqliteInt.h"
 #include "os.h"
@@ -734,11 +734,16 @@ case OP_String8: {
  pOp->opcode = OP_String;

  if( db->enc!=SQLITE_UTF8 && pOp->p3 ){
+    char *z = pOp->p3;
    if( db->enc==SQLITE_UTF16LE ){
-      pOp->p3 = sqlite3utf8to16le(pOp->p3, -1);
+      pOp->p3 = sqlite3utf8to16le(z, -1);
    }else{
-      pOp->p3 = sqlite3utf8to16be(pOp->p3, -1);
+      pOp->p3 = sqlite3utf8to16be(z, -1);
    }
+    if( pOp->p3type==P3_DYNAMIC ){
+      sqliteFree(z);
+    }
+    pOp->p3type = P3_DYNAMIC;
    if( !pOp->p3 ) goto no_mem;
  }

@@ -788,6 +793,9 @@ case OP_HexBlob: {
    pOp->p3 = zBlob;
    pOp->p3type = P3_DYNAMIC;
  }else{
+    if( pOp->p3type==P3_DYNAMIC ){
+      sqliteFree(pOp->p3);
+    }
    pOp->p3type = P3_STATIC;
    pOp->p3 = "";
  }
@@ -4542,11 +4550,12 @@ case OP_AggNext: {
      ctx.s.flags = MEM_Null;
      ctx.s.z = aMem[i].zShort;
      ctx.pAgg = (void*)aMem[i].z;
-      freeCtx = aMem[i].z && aMem[i].z!=aMem[i].zShort;
      ctx.cnt = aMem[i].i;
      ctx.isStep = 0;
      ctx.pFunc = p->agg.apFunc[i];
      (*p->agg.apFunc[i]->xFinalize)(&ctx);
+      aMem[i].z = ctx.pAgg;
+      freeCtx = aMem[i].z && aMem[i].z!=aMem[i].zShort;
      if( freeCtx ){
        sqliteFree( aMem[i].z );
      }
--- a/src/vdbeaux.c
+++ b/src/vdbeaux.c
@@ -745,6 +745,7 @@ int sqlite3VdbeAggReset(sqlite *db, Agg *pAgg, KeyInfo *pKeyInfo){
          ctx.isStep = 0;
          ctx.isError = 0;
          (*pAgg->apFunc[i]->xFinalize)(&ctx);
+          pMem->z = ctx.pAgg;
          if( pMem->z!=0 && pMem->z!=pMem->z ){
            sqliteFree(pMem->z);
          }