[PATCH 0/2] pahole: BTF alignment inference improvements

[Antoine Tenart <atenart@kernel.org>]

Hello,

While generating C code using pahole we noticed alignment issues in rare
cases: when having variable size and 0-length arrays, and when a hole
follows a bitfield. It's worth noticing alignment is inferred when using
BTF as a source as the format does not contain such information. As such
the logic is tricky.

The first patch fixes alignment inference for zero-length and variable
length arrays. The second patch fixes alignment when a hole follows a
bitfield.

I generated a full vmlinux.h using `pahole --compile` before and after
the changes, the differences looked reasonable to me. I've also ran the
project's tests using GH actions.

Thanks,
Antoine

Antoine Tenart (2):
  btf_loader: infer alignment for zero-length arrays
  btf_loader: fix smallest offset in case of bitfields

 btf_loader.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

-- 
2.49.0