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Overview
Comment:Avoid using a misaligned pointer.
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SHA3-256: 1ecb3aa13de5c8dc611b814ff34010de0bd90aae73d88aa37a59c4627be4cc2d
User & Date: drh 2018-06-02 19:14:58.082
Context
2018-06-04
19:24
Version 3.24.0 (check-in: c7ee083322 user: drh tags: trunk, release, version-3.24.0)
14:10
Merge changes from trunk. (check-in: 95fbac39ba user: drh tags: apple-osx)
13:27
Merge recent changes from trunk. (check-in: f8df2a8e28 user: drh tags: multikey-opt-idea)
08:28
Merge latest trunk changes into this branch. (check-in: 83d6416a86 user: dan tags: exp-window-functions)
2018-06-02
19:14
Avoid using a misaligned pointer. (check-in: 1ecb3aa13d user: drh tags: trunk)
19:01
Fix the usage of posix_fallocate() so that it correctly responds to EINVAL returns. (check-in: ce2c3e7a87 user: drh tags: trunk)
16:32
Work around a sanitizer warning about a pointer being only 4-byte aligned instead of 8-byte aligned. (Closed-Leaf check-in: 1b807b51cd user: drh tags: align8-fix)
Changes
Unified Diff Ignore Whitespace Patch
Changes to src/btree.c.
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**
** Calling this routine with a NULL cursor pointer returns false.
**
** Use the separate sqlite3BtreeCursorRestore() routine to restore a cursor
** back to where it ought to be if this routine returns true.
*/
int sqlite3BtreeCursorHasMoved(BtCursor *pCur){



  return pCur->eState!=CURSOR_VALID;

}

/*
** Return a pointer to a fake BtCursor object that will always answer
** false to the sqlite3BtreeCursorHasMoved() routine above.  The fake
** cursor returned must not be used with any other Btree interface.
*/








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**
** Calling this routine with a NULL cursor pointer returns false.
**
** Use the separate sqlite3BtreeCursorRestore() routine to restore a cursor
** back to where it ought to be if this routine returns true.
*/
int sqlite3BtreeCursorHasMoved(BtCursor *pCur){
  assert( EIGHT_BYTE_ALIGNMENT(pCur)
       || pCur==sqlite3BtreeFakeValidCursor() );
  assert( offsetof(BtCursor, eState)==0 );
  assert( sizeof(pCur->eState)==1 );
  return CURSOR_VALID != *(u8*)pCur;
}

/*
** Return a pointer to a fake BtCursor object that will always answer
** false to the sqlite3BtreeCursorHasMoved() routine above.  The fake
** cursor returned must not be used with any other Btree interface.
*/
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