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authorAndrii Nakryiko <andriin@fb.com>2020-03-03 10:08:00 -0800
committerAlexei Starovoitov <ast@kernel.org>2020-03-03 16:41:36 -0800
commit320a36063e1441210106aa33997ad3770d4c86b4 (patch)
treea8b7de3d5af8f83f95546557c6a888d52396ca94 /tools/lib
parent5fc40f37396cec199d40a417df74b39c8e458ca6 (diff)
libbpf: Fix handling of optional field_name in btf_dump__emit_type_decl
Internal functions, used by btf_dump__emit_type_decl(), assume field_name is never going to be NULL. Ensure it's always the case. Fixes: 9f81654eebe8 ("libbpf: Expose BTF-to-C type declaration emitting API") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200303180800.3303471-1-andriin@fb.com
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/bpf/btf_dump.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
index bd09ed1710f1..dc451e4de5ad 100644
--- a/tools/lib/bpf/btf_dump.c
+++ b/tools/lib/bpf/btf_dump.c
@@ -1030,7 +1030,7 @@ int btf_dump__emit_type_decl(struct btf_dump *d, __u32 id,
if (!OPTS_VALID(opts, btf_dump_emit_type_decl_opts))
return -EINVAL;
- fname = OPTS_GET(opts, field_name, NULL);
+ fname = OPTS_GET(opts, field_name, "");
lvl = OPTS_GET(opts, indent_level, 0);
btf_dump_emit_type_decl(d, id, fname, lvl);
return 0;