[PATCH bpf-next 03/13] libbpf: prevent UBSan from complaining about integer overflow

[Andrii Nakryiko <andrii@xxxxxxxxxx>]

Integer overflow is intentional, silence the sanitizer. It works
completely reliably on sane compilers and architectures.

Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
---
 tools/lib/bpf/btf.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 8024fe355ca8..be1dafd56a13 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -3127,6 +3127,7 @@ struct btf_dedup {
 	struct strset *strs_set;
 };
 
+__attribute__((no_sanitize("signed-integer-overflow")))
 static long hash_combine(long h, long value)
 {
 	return h * 31 + value;
-- 
2.30.2