[perfmon2] [PATCH] Fix -Wunused-but-set-variable in self_smpl_multi

[Aiden G. <aid...@gm...>]

Currently self_smpl_multi fails to compile in the default make
configuration with recent compilers (such as clang v18) due to
-Wunused-but-set-variable being triggered by the variable sum. This
patch removes the variable to get rid of the warning as it is not used
anywhere.
---
perf_examples/self_smpl_multi.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/perf_examples/self_smpl_multi.c
b/perf_examples/self_smpl_multi.c
index 391fa61..b6a9c03 100644
--- a/perf_examples/self_smpl_multi.c
+++ b/perf_examples/self_smpl_multi.c
@@ -141,7 +141,7 @@ void
do_cycles(void)
{
       struct timeval start, last, now;
-       unsigned long x, sum;
+       unsigned long x;

       gettimeofday(&start, NULL);
       last = start;
@@ -151,14 +151,12 @@ do_cycles(void)

       do {

-               sum = 1;
               for (x = 1; x < 250000; x++) {
                       /* signal pending to private queue because of
                        * pthread_kill(), i.e., tkill()
                        */
                       if ((x % 5000) == 0)
                               pthread_kill(pthread_self(), SIGUSR1);
-                       sum += x;
               }
               iter[myid]++;

--
2.34.1