Header inconsistency after invalidate/reconsider block #26245

1. 
   fanquake commented at 12:59 pm on October 4, 2022: member

   Demonstration using regtest.

   0# getblockchaininfo
   1  "chain": "regtest",
   2  "blocks": 0,
   3  "headers": 0,
   

   Mine a block

   0# getblockchaininfo
   1  "chain": "regtest",
   2  "blocks": 1,
   3  "headers": 1,
   

   Call invalidateblock

    0# getblockchaininfo
    1  "chain": "regtest",
    2  "blocks": 0,
    3  "headers": 0,
    4# getchaintips
    5    "height": 1,
    6    "hash": "06702ef73c7d8629294f8b6386646f888d60979932ba2ee45e3495d8f25006b5",
    7    "branchlen": 1,
    8    "status": "invalid"
    9  },
   10  {
   11    "height": 0,
   12    "hash": "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206",
   13    "branchlen": 0,
   14    "status": "active"
   

   Call reconsiderblock

   0# getchaintips
   1    "height": 1,
   2    "hash": "06702ef73c7d8629294f8b6386646f888d60979932ba2ee45e3495d8f25006b5",
   3    "branchlen": 0,
   4    "status": "active"
   

   Header count returned by getblockchaininfo is now < # of blocks.

   0# getblockchaininfo
   1  "chain": "regtest",
   2  "blocks": 1,
   3  "headers": 0,
   

2. fanquake added the label Bug on Oct 4, 2022
3. maflcko added the label Validation on Oct 4, 2022
4. 
   maflcko commented at 1:05 pm on October 4, 2022: member

   Is this a regression?
5. 
   fanquake commented at 1:54 pm on October 4, 2022: member

   Is this a regression?

   Can recreate the same behaviour with builds of 23.x and 22.x.

6. achow101 closed this on Nov 14, 2024

   ---

7. casey referenced this in commit 85bcfeea23 on Nov 14, 2024
8. fanquake referenced this in commit 65b26507b8 on Jun 13, 2025
9. bitcoin locked this on Nov 14, 2025

Contributors
fanquake maflcko

Labels
Bug Validation