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Overview
Comment:Fix a potential NULL pointer dereference that can occur in ALTER TABLE following an OOM. Test case in TH3.
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SHA3-256: ea50815bf80ab0d36891518f209acbcd3d6d8d84529741bffd4e841874c78aff
User & Date: drh 2018-12-06 01:53:12.207
Context
2018-12-06
14:11
Fix a potential NULL pointer dereference that can occur in ALTER TABLE following an OOM. Test case in TH3. (check-in: 99a0951fdc user: drh tags: branch-3.26)
02:01
Remove the unused pColHash field from the Table object. (check-in: 3a2c047989 user: drh tags: trunk)
01:53
Fix a potential NULL pointer dereference that can occur in ALTER TABLE following an OOM. Test case in TH3. (check-in: ea50815bf8 user: drh tags: trunk)
01:08
Fix a missing mutex in the sqlite3_normalized_sql() interface when it is called on a prepared statement that did not previously have a computed normalization of the input SQL. (check-in: 1a1a59c6c5 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/alter.c.
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/*
** Walker select callback used by "RENAME TABLE". 
*/
static int renameTableSelectCb(Walker *pWalker, Select *pSelect){
  int i;
  RenameCtx *p = pWalker->u.pRename;
  SrcList *pSrc = pSelect->pSrc;




  for(i=0; i<pSrc->nSrc; i++){
    struct SrcList_item *pItem = &pSrc->a[i];
    if( pItem->pTab==p->pTab ){
      renameTokenFind(pWalker->pParse, p, pItem->zName);
    }
  }
  renameWalkWith(pWalker, pSelect);







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/*
** Walker select callback used by "RENAME TABLE". 
*/
static int renameTableSelectCb(Walker *pWalker, Select *pSelect){
  int i;
  RenameCtx *p = pWalker->u.pRename;
  SrcList *pSrc = pSelect->pSrc;
  if( pSrc==0 ){
    assert( pWalker->pParse->db->mallocFailed );
    return WRC_Abort;
  }
  for(i=0; i<pSrc->nSrc; i++){
    struct SrcList_item *pItem = &pSrc->a[i];
    if( pItem->pTab==p->pTab ){
      renameTokenFind(pWalker->pParse, p, pItem->zName);
    }
  }
  renameWalkWith(pWalker, pSelect);