#22 fails to compile with clang 16

[Justin Tracey]

Encountered when using pip on Termux on android, same as this bug: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271531

[mathieu Clabaut]

Reproduced here.

[Tomasz Kłoczko]

It fails the same way as well with gcc 14 which snapshot is now available in fedora rawhide.

[Imre Jonk]

gcc is also at version 14 in Arch Linux. The ruamel.yaml.clib packagers worked around the issue with a compiler flag that disables the error:

  # Workaround for GCC 14, see https://sourceforge.net/p/ruamel-yaml-clib/tickets/22/
  CFLAGS="$CFLAGS -Wno-error=incompatible-pointer-types" \
  python -m build --wheel --skip-dependency-check --no-isolation

https://gitlab.archlinux.org/archlinux/packaging/packages/python-ruamel.yaml.clib/-/blob/1dd0bc69e2c3b0411e4b87f31e72b9fe3182200f/PKGBUILD#L21-L23

The underlying issue of incompatible pointer types is of course not solved with this flag.

[Florian Weimer]

In Fedora, we have a downstream patch to fix some pointer incompatibles, but it only changed the minimum required to fix a bug on s390x. I fixed some more problems, and the compilation errors are gone.

[Henrich Hartzer]

Would it cause any issues to apply this patch permanently?

https://cgit.freebsd.org/ports/plain/devel/py-ruamel.yaml.clib/files/patch-clang16

[Henrich Hartzer]

This bug means that pip install ruamel.yaml (or pip install yaml.clib) will fail on FreeBSD. ruamel.yaml has to be installed via ports, which has the patch.