levy5307 opened a new pull request, #12919:
URL: https://github.com/apache/doris/pull/12919

   # Proposed changes
   
   Issue Number: [5664](https://github.com/apache/doris/issues/5664)
   
   ## Problem summary
   
   - Implement branch prediction util. For more details: 
https://stackoverflow.com/questions/7346929/what-is-the-advantage-of-gccs-builtin-expect-in-if-else-statements
   - To avoid the coredump memtioned in above issue, adding the validation of 
pointer before using it.
   BTW, It's a best practise to validate a pointer before using it.
   
   ## Checklist(Required)
   
   1. Does it affect the original behavior: 
       - [ ] No
   2. Has unit tests been added:
       - [ ] No Need
   3. Has document been added or modified:
       - [ ] No Need
   4. Does it need to update dependencies:
       - [ ] No
   5. Are there any changes that cannot be rolled back:
       - [ ] No
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[d...@doris.apache.org](mailto:d...@doris.apache.org)](mailto:d...@doris.apache.org)
 by explaining why you chose the solution you did and what alternatives you 
considered, etc...


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