From: David Michael <fedora.dm0@xxxxxxxxx>
commit dfd0afbf151d85411b371e841f62b81ee5d1ca54 upstream.
GCC 11.3.0 fails to compile btf_dump.c due to the following error,
which seems to originate in btf_dump_struct_data where the returned
value would be uninitialized if btf_vlen returns zero.
btf_dump.c: In function ‘btf_dump_dump_type_data’:
btf_dump.c:2363:12: error: ‘err’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
2363 | if (err < 0)
| ^
Fixes: 920d16af9b42 ("libbpf: BTF dumper support for typed data")
Signed-off-by: David Michael <fedora.dm0@xxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Acked-by: Stanislav Fomichev <sdf@xxxxxxxxxx>
Acked-by: Alan Maguire <alan.maguire@xxxxxxxxxx>
Link: https://lore.kernel.org/bpf/87zgcu60hq.fsf@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/lib/bpf/btf_dump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -1963,7 +1963,7 @@ static int btf_dump_struct_data(struct b
{
const struct btf_member *m = btf_members(t);
__u16 n = btf_vlen(t);
- int i, err;
+ int i, err = 0;
/* note that we increment depth before calling btf_dump_print() below;
* this is intentional. btf_dump_data_newline() will not print a
