[PATCH v2 bpf-next 0/6] BTF-to-C dumper fixes and improvements

[Andrii Nakryiko <andrii@kernel.org>]

Fix few tricky issues in libbpf's BTF-to-C converter, discovered thanks to
Per's reports and his randomized testing script.

Most notably there is a much improved and correct padding handling.  But also
it turned out that some corner cases with enums weren't handled correctly
(mode(byte) attribute was a new discovery for me). See respective patches for
more details.

v1->v2:
  - fix bug in natural alignment detection (Eduard).

Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Per Sundström XP <per.xp.sundstrom@ericsson.com>

Andrii Nakryiko (6):
  libbpf: fix single-line struct definition output in btf_dump
  libbpf: handle non-standardly sized enums better in BTF-to-C dumper
  selftests/bpf: add non-standardly sized enum tests for btf_dump
  libbpf: fix btf__align_of() by taking into account field offsets
  libbpf: fix BTF-to-C converter's padding logic
  selftests/bpf: add few corner cases to test padding handling of
    btf_dump

 tools/lib/bpf/btf.c                           |  13 ++
 tools/lib/bpf/btf_dump.c                      | 214 ++++++++++++++----
 .../bpf/progs/btf_dump_test_case_bitfields.c  |   2 +-
 .../bpf/progs/btf_dump_test_case_packing.c    |  61 ++++-
 .../bpf/progs/btf_dump_test_case_padding.c    | 162 +++++++++++--
 .../bpf/progs/btf_dump_test_case_syntax.c     |  36 +++
 6 files changed, 420 insertions(+), 68 deletions(-)

-- 
2.30.2