This series fixes a btf dump error caused by forward declaration.
Currently if a declaration appears in the BTF before the definition,
the definition is dumped as a conflicting name, eg:
$ bpftool btf dump file vmlinux format raw | grep "'unix_sock'"
[81287] FWD 'unix_sock' fwd_kind=struct
[89336] STRUCT 'unix_sock' size=1024 vlen=14
$ bpftool btf dump file vmlinux format c | grep "struct unix_sock"
struct unix_sock;
struct unix_sock___2 { <--- conflict, the "___2" is unexpected
struct unix_sock___2 *unix_sk;
This causes a "definition not found" compilation error if the dump output
is used as a header file.
Xu Kuohai (2):
libbpf: Skip forward declaration when counting duplicated type names
selftests/bpf: Update btf_dump case for conflicting names
tools/lib/bpf/btf_dump.c | 5 ++
.../selftests/bpf/prog_tests/btf_dump.c | 54 ++++++++++++++-----
2 files changed, 46 insertions(+), 13 deletions(-)
--
2.30.2
