[PATCH bpf-next] bpftool: Fix handling enum64 in btf dump sorting

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From: Mykyta Yatsenko <yatsenko@xxxxxxxx>

Wrong function is used to access the first enum64 element.
Substituting btf_enum(t) with btf_enum64(t) for BTF_KIND_ENUM64.

Signed-off-by: Mykyta Yatsenko <yatsenko@xxxxxxxx>
---
 tools/bpf/bpftool/btf.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 6789c7a4d5ca..b0f12c511bb3 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -557,16 +557,23 @@ static const char *btf_type_sort_name(const struct btf *btf, __u32 index, bool f
 	const struct btf_type *t = btf__type_by_id(btf, index);
 
 	switch (btf_kind(t)) {
-	case BTF_KIND_ENUM:
-	case BTF_KIND_ENUM64: {
+	case BTF_KIND_ENUM: {
 		int name_off = t->name_off;
 
 		/* Use name of the first element for anonymous enums if allowed */
-		if (!from_ref && !t->name_off && btf_vlen(t))
+		if (!from_ref && !name_off && btf_vlen(t))
 			name_off = btf_enum(t)->name_off;
 
 		return btf__name_by_offset(btf, name_off);
 	}
+	case BTF_KIND_ENUM64: {
+		int name_off = t->name_off;
+
+		if (!from_ref && !name_off && btf_vlen(t))
+			name_off = btf_enum64(t)->name_off;
+
+		return btf__name_by_offset(btf, name_off);
+	}
 	case BTF_KIND_ARRAY:
 		return btf_type_sort_name(btf, btf_array(t)->type, true);
 	case BTF_KIND_TYPE_TAG:
-- 
2.46.0





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