[jira] [Updated] (ARROW-10692) [Rust] Segfault while array buffer append

["Ziru Niu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-10692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ziru Niu updated ARROW-10692:
-----------------------------
    Summary: [Rust] Segfault while array buffer append  (was: Segfault while array buffer append)

> [Rust] Segfault while array buffer append
> -----------------------------------------
>
>                 Key: ARROW-10692
>                 URL: https://issues.apache.org/jira/browse/ARROW-10692
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Rust
>    Affects Versions: 2.0.0
>         Environment: Ubuntu 20.04. rustc-nightly, 
>            Reporter: Ziru Niu
>            Priority: Blocker
>
> {quote}// src/buffer.rs:657
>     
>      /// Ensures that this buffer has at least `capacity` slots in this buffer. This will
>      /// also ensure the new capacity will be a multiple of 64 bytes.
>      ///
>      /// Returns the new capacity for this buffer.
>      pub fn reserve(&mut self, capacity: usize) -> Result<usize> \{
>          if capacity > self.capacity \{
>             unsafe \{ memory :: reallocate(self.data, self.capacity, new_capacity) };
>              self.data = new_data as *mut u8;
>              self.capacity = new_capacity;
>          }
>          Ok(self.capacity)
>      }{quote}
>  
>  Above code is not checking if new_data is null, which is causing segfault on following memcpy when reallocate failed.



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