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Loop invariants and harnesses for memchr functions #429
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            Loop invariants and harnesses for memchr functions #429
                    thanhnguyen-aws
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  model-checking:main
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thanhnguyen-aws:memchrinvariant
  
      
      
   
              
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    …verify-rust-std into memchrinvariant
              
                    tautschnig
  
              
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                    Aug 16, 2025 
                  
              
              
            
            
| let mut i = 0; | ||
|  | ||
| // FIXME(const-hack): Replace with `text.iter().pos(|c| *c == x)`. | ||
| #[cfg_attr(kani, kani::loop_invariant(i <= text.len() && forall!(|j in (0,i)| unsafe {*text.as_ptr().wrapping_add(j)} != x)))] | 
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We will need to use an SMT solver for any function that eventually invokes this function.
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This PR adds loop invariants and harnesses for memchr functions
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 and MIT licenses.