[GitHub] [arrow] jianxind commented on pull request #7986: ARROW-9781: [C++] Fix valgrind uninitialized value warnings

[GitBox <gi...@apache.org>]

jianxind commented on pull request #7986:
URL: https://github.com/apache/arrow/pull/7986#issuecomment-675806083


   The failed compute case is running with SimdLevel::AVX512(4), probably Valgrind doesn't support AVX512?
   
   ```
   ==5971== Your program just tried to execute an instruction that Valgrind
   ==5971== did not recognise.  There are two possible reasons for this.
   ==5971== 1. Your program has a bug and erroneously jumped to a non-code
   ==5971==    location.  If you are running Memcheck and you just saw a
   ==5971==    warning about a bad jump, it's probably your program's fault.
   ==5971== 2. The instruction is legitimate but Valgrind doesn't handle it,
   ==5971==    i.e. it's Valgrind's fault.  If you think this is the case or
   ==5971==    you are not sure, please let us know and we'll try to fix it.
   ==5971== Either way, Valgrind will now raise a SIGILL signal which will
   ==5971== probably kill your program.
   ```


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