Re: seawasp failing, maybe in glibc allocator

Hi,

On 2021-05-21 21:37:22 +1200, Thomas Munro wrote:
> I installed Clang/LLVM version
> "1:13~++20210520071732+02f2d739e074-1~exp1~20210520052519.57" from
> https://apt.llvm.org/ on a Debian buster box, and I saw that
> contrib/ltree's test fail about half the time with a range of weird
> and wonderful outputs (wrong answers) similar to seawasp, but it never
> crashed.  I ran it under valgrind and I managed to get:

Interesting. I tried this with a slightly older LLVM checkout
(6f4f0afaa8ae), from 2021-04-20, contrib/ltree tests run without an
issue, even if I force everything to be jitted+inlined+optimized. The
git hash in the package version indicates the commit is from
2021-05-20. Upgrading my local checkout to see whether I can repro the
problem. If I can we at least have a not too large bisection window...

Greetings,

Andres Freund