[PATCH bpf-next 10/11] samples: bpf: fix -Wsequence-point

[Alexander Lobakin]

In some libc implementations, CPU_SET() may utilize its first
argument several times. When combined with a post-increment, it
leads to:

samples/bpf/test_lru_dist.c:233:36: warning: operation on 'next_to_try' may be undefined [-Wsequence-point]
  233 |                 CPU_SET(next_to_try++, &cpuset);
      |                                    ^

Split the sentence into two standalone operations to fix this.

Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
Signed-off-by: Alexander Lobakin <alobakin@xxxxx>
---
 samples/bpf/test_lru_dist.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/samples/bpf/test_lru_dist.c b/samples/bpf/test_lru_dist.c
index be98ccb4952f..191643ec501e 100644
--- a/samples/bpf/test_lru_dist.c
+++ b/samples/bpf/test_lru_dist.c
@@ -229,7 +229,8 @@ static int sched_next_online(int pid, int next_to_try)

 	while (next_to_try < nr_cpus) {
 		CPU_ZERO(&cpuset);
-		CPU_SET(next_to_try++, &cpuset);
+		CPU_SET(next_to_try, &cpuset);
+		next_to_try++;
 		if (!sched_setaffinity(pid, sizeof(cpuset), &cpuset))
 			break;
 	}
--
2.35.2