SQLite

Differences From Artifact [a85f0dc5c0]:

• File src/memjournal.c — part of check-in [17960165f5] at 2021-05-24 14:35:19 on branch trunk — Fix a problem in the in-memory journal code that could occasionally lead to a segfault when a sub-transaction that modified zero pages was committed. (user: dan size: 13785) [more...]

To Artifact [ff4336a98b]:

• File src/memjournal.c — part of check-in [73c2b50211] at 2022-01-01 19:29:50 on branch trunk — Fix an obscure problem with releasing savepoints stored in an in-memory journal that could cause subsequent savepoint rollback to fail. Problem reported by forum post d7338bf4901f1151, PoC #3. The problem appears to have been introduced at [23ca23894af352ea]. (user: dan size: 13784) [more...]

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  if( size<p->endpoint.iOffset ){
    FileChunk *pIter = 0;
    if( size==0 ){
      memjrnlFreeChunks(p->pFirst);
      p->pFirst = 0;
    }else{
      i64 iOff = p->nChunkSize;
      for(pIter=p->pFirst; ALWAYS(pIter) && iOff<=size; pIter=pIter->pNext){
        iOff += p->nChunkSize;
      }
      if( ALWAYS(pIter) ){
        memjrnlFreeChunks(pIter->pNext);
        pIter->pNext = 0;
      }
    }

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  if( size<p->endpoint.iOffset ){
    FileChunk *pIter = 0;
    if( size==0 ){
      memjrnlFreeChunks(p->pFirst);
      p->pFirst = 0;
    }else{
      i64 iOff = p->nChunkSize;
      for(pIter=p->pFirst; ALWAYS(pIter) && iOff<size; pIter=pIter->pNext){
        iOff += p->nChunkSize;
      }
      if( ALWAYS(pIter) ){
        memjrnlFreeChunks(pIter->pNext);
        pIter->pNext = 0;
      }
    }