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Re: stackovf.test fails on Solaris 11/sparc64


From: Paul Eggert
Subject: Re: stackovf.test fails on Solaris 11/sparc64
Date: Sat, 15 May 2021 01:28:04 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1

On 5/14/21 5:07 PM, Bruno Haible wrote:
I won't spend any more time on fixing this Solaris-only code — when we
have code that works on all platforms in GNU libsigsegv.

At first I fixed this by having c-stack simply defer to libsigsegv if installed, but I found that this didn't work on gcc211 in the GCC compile farm, because its version of Solaris 11 has libsigsegv 2.12 and this older libsigsegv has a similar bug that also causes that test to fail. So I installed the attached patch instead; please give it a try.

With this patch, I expect Gnulib test-c-stack2.sh to fail on Solaris 11 sparc with older libsigsegv installed, because it'll report "cannot tell stack overflow from crash, in spite of libsigsegv". I expect that's good enough, as the failure report is accurate for that platform and people can avoid the failure by updating to current libsigsegv.

I hear what you're saying about Solaris SPARC not being worth a lot of our time nowadays. Still, Oracle says it'll support it through 2034(!) though you will need a SPARC T4 or SPARC64 X or better, and I suppose we should continue to keep Solaris SPARC working if it's easy.

Attachment: 0001-c-stack-work-around-Solaris-11-bugs.patch
Description: Text Data


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