| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Thomas Munro <thomas(dot)munro(at)gmail(dot)com> |
| Cc: | Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: seawasp failing, maybe in glibc allocator |
| Date: | 2021-05-21 21:58:38 |
| Message-ID: | 20210521215838.cs7f4pn3kpxbgeav@alap3.anarazel.de |
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| Lists: | pgsql-hackers |
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
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