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Date: Tue, 18 Mar 2025 18:30:56 -0400
From: "Jim Pryor" <dubiousjim@gmail.com>
To: Sertonix <sertonix@posteo.net>, ~alpine/devel@lists.alpinelinux.org
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 <D8JPX4S6FPXS.1JHNGLY840E49@posteo.net>
Subject: Re: stack smashing protection?
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On Tue, Mar 18, 2025, at 5:43 PM, Sertonix wrote:
> Do you have any small command that can reproduce the issue?
>
> I tried gcc -o main main.c -fstack-protector-all with a simple test file
> and it build fine.

Unfortunately I don't have a minimal reproduction. For me the failure came when building the examples/features2 and examples/features3 files in the micropython source tree. This requires having a significant part of the micropython source tree installed (for included headers and makefile pieces). Also the linking is done by the tools/mpy_ld.py file, which uses CPython and the py3-elftools library. So a whole lot of infrastructure. I expect there'd be some way to get a smaller reproduction, but I'm not able to produce it now.

I can build the other example Python C libraries (which the mpy_ld.py tool links into *.mpy files) besides those two, without disabling stack protection. And if I disable stack protection I can build all of them.

-- 
dubiousjim@gmail.com