Horton

Re: gs_group_1 crashing on 13beta2/s390x

Christoph Berg <myon@debian.org>

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From: Christoph Berg <myon@debian.org>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2020-07-16T09:33:58Z
Lists: pgsql-hackers 
Re: Tom Lane
> Given the apparently-can't-happen situation at the call site,
> and the fact that we're not seeing similar failures reported
> elsewhere (and note that every line shown above is at least
> five years old), I'm kind of forced to the conclusion that this
> is a compiler bug.  Does adjusting the -O level make it go away?

The problem is that a manual build doesn't crash, and I'm somewhat
reluctant to do a full new package upload (which will keep buildds for
all architectures busy) just for a -O0 test unless we are sure it
helps.

I'd rather play more with the manual build artifacts (which should be
using the same compiler and everything), if anyone has ideas what I
should be trying.

Christoph

Commits

  1. llvmjit: Work around bug in LLVM 3.9 causing crashes after 72559438f92.

  2. llvmjit: Also copy parameter / return value attributes from template functions.