Commits on Apr 17, 2024

1. fix: VFS should not walk circular symlinks …

   As of rust-lang#6246, rust-analyzer follows symlinks. This can introduce an
   infinite loop if symlinks point to parent directories.
   
   Considering that rust-lang#6246 was added in 2020 without many bug reports,
   this is clearly a rare occurrence. However, I am observing
   rust-analyzer hang on projects that have symlinks of the form:
   
   ```
   test/a_symlink -> ../../
   ```
   
   Ignore symlinks that only point to the parent directories, as this is
   more robust but still allows typical symlink usage patterns.

   

   Wilfred committed Apr 17, 2024
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