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Overview
Comment:Remove an unreachable branch in the error handling logic for sqlite3BtreePayloadChecked().
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SHA1: 293bf3ed7e40745349c83b202b27ed1b48517e1a
User & Date: drh 2017-01-26 21:30:00
Context
2017-01-27
00:31
Simplify the accessPayload() routine so that it always populates the overflow page cache. In the one case where populating the page cache can lead to problems, simply invalidate the cache as soon as accessPayload() returns. This simplification reduces code size and helps accessPayload() to run a little faster. This backs out the eOp==2 mode of accessPayload() added by check-in [da59198505]. check-in: 68e7a8c6 user: drh tags: trunk
2017-01-26
21:30
Remove an unreachable branch in the error handling logic for sqlite3BtreePayloadChecked(). check-in: 293bf3ed user: drh tags: trunk
18:00
Improvement to the OP_Permutation opcode to prevent it from using CPU cycles for initialization in prepared statements that do not use that opcode. check-in: b4a98f65 user: drh tags: trunk
Changes
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Changes to src/btree.c.

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  void *pBuf
){
  int rc;
  if ( pCur->eState==CURSOR_INVALID ){
    return SQLITE_ABORT;
  }
  assert( cursorOwnsBtShared(pCur) );
  rc = restoreCursorPosition(pCur);
  return rc ? rc : accessPayload(pCur, offset, amt, pBuf, 0);
}
int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
  if( pCur->eState==CURSOR_VALID ){
    assert( cursorOwnsBtShared(pCur) );
    return accessPayload(pCur, offset, amt, pBuf, 0);
  }else{







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  void *pBuf
){
  int rc;
  if ( pCur->eState==CURSOR_INVALID ){
    return SQLITE_ABORT;
  }
  assert( cursorOwnsBtShared(pCur) );
  rc = btreeRestoreCursorPosition(pCur);
  return rc ? rc : accessPayload(pCur, offset, amt, pBuf, 0);
}
int sqlite3BtreePayloadChecked(BtCursor *pCur, u32 offset, u32 amt, void *pBuf){
  if( pCur->eState==CURSOR_VALID ){
    assert( cursorOwnsBtShared(pCur) );
    return accessPayload(pCur, offset, amt, pBuf, 0);
  }else{