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Avoid possible infinite loop when next_point reaching the end of file #103521
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    | r? @jackh726 (rust-highfive has picked a reviewer for you, use r? to override) | 
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    | Looks reasonable to me, but not familiar with this code, so r? compiler | 
              
                    wesleywiser
  
              
              approved these changes
              
                  
                    Nov 7, 2022 
                  
              
              
            
            
| @bors r=jackh726,wesleywiser | 
    
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…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
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…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  GuillaumeGomez 
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      Nov 8, 2022 
    
    
      
  
    
      
    
  
…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  GuillaumeGomez 
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      Nov 8, 2022 
    
    
      
  
    
      
    
  
…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  GuillaumeGomez 
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…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  Manishearth 
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      Nov 8, 2022 
    
    
      
  
    
      
    
  
…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  Manishearth 
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      Nov 8, 2022 
    
    
      
  
    
      
    
  
…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
    
  Manishearth 
      added a commit
        to Manishearth/rust
      that referenced
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      Nov 8, 2022 
    
    
      
  
    
      
    
  
…-hang, r=jackh726,wesleywiser Avoid possible infinite loop when next_point reaching the end of file Fixes rust-lang#103451 If we return a span with `lo` = `hi`, `span_to_snippet` will always get `Ok("")`, which may introduce infinite loop if we don't care. This PR make `find_width_of_character_at_span` return `width` with 1, so that `span_to_snippet` will get an `Err`.
  This was referenced Nov 8, 2022 
      
    
  bors 
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…earth Rollup of 7 pull requests Successful merges: - rust-lang#100508 (avoid making substs of type aliases late bound when used as fn args) - rust-lang#101381 (Test that target feature mix up with homogeneous floats is sound) - rust-lang#103353 (Fix Access Violation when using lld & ThinLTO on windows-msvc) - rust-lang#103521 (Avoid possible infinite loop when next_point reaching the end of file) - rust-lang#103559 (first move on a nested span_label) - rust-lang#103778 (Update several crates for improved support of the new targets) - rust-lang#103827 (Properly remap and check for substs compatibility in `confirm_impl_trait_in_trait_candidate`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
  
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Fixes #103451
If we return a span with
lo=hi,span_to_snippetwill always getOk(""), which may introduce infinite loop if we don't care.This PR make
find_width_of_character_at_spanreturnwidthwith 1, so thatspan_to_snippetwill get anErr.