[PATCH bpf-next 2/2] selftests/bpf: verify newline for struct with padding only fields

[Eduard Zingerman <eddyz87@xxxxxxxxx>]

Verify that `bpftool btf dump file ... format c` correctly prints
newlines for structures that consist of anonymous-only padding fields.

Signed-off-by: Eduard Zingerman <eddyz87@xxxxxxxxx>
---
 .../bpf/progs/btf_dump_test_case_padding.c       | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
index f2661c8d2d90..08e43ee38188 100644
--- a/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
+++ b/tools/testing/selftests/bpf/progs/btf_dump_test_case_padding.c
@@ -102,12 +102,28 @@ struct zone {
 	struct zone_padding __pad__;
 };
 
+/* ----- START-EXPECTED-OUTPUT ----- */
+/*
+ *struct padding_wo_named_members {
+ *	long: 64;
+ *	long: 64;
+ *};
+ *
+ */
+/* ------ END-EXPECTED-OUTPUT ------ */
+
+struct padding_wo_named_members {
+	long: 64;
+	long: 64;
+} __attribute__((aligned(8)));
+
 int f(struct {
 	struct padded_implicitly _1;
 	struct padded_explicitly _2;
 	struct padded_a_lot _3;
 	struct padded_cache_line _4;
 	struct zone _5;
+	struct padding_wo_named_members _6;
 } *_)
 {
 	return 0;
-- 
2.37.3