@@ -622,7 +622,7 @@ bpf_object__init_maps(struct bpf_object *obj, int flags)
bool strict = !(flags & MAPS_RELAX_COMPAT);
int i, map_idx, map_def_sz, nr_maps = 0;
Elf_Scn *scn;
- Elf_Data *data;
+ Elf_Data *data = NULL;
Elf_Data *symbols = obj->efile.symbols;
if (obj->efile.maps_shndx < 0)
@@ -224,7 +224,7 @@ static int do_threads(struct worker *worker, struct cpu_map *cpu)
pthread_attr_t thread_attr, *attrp = NULL;
cpu_set_t cpuset;
unsigned int i, j;
- int ret;
+ int ret = 0;
if (!noaffinity)
pthread_attr_init(&thread_attr);
@@ -293,7 +293,7 @@ static int do_threads(struct worker *worker, struct cpu_map *cpu)
pthread_attr_t thread_attr, *attrp = NULL;
cpu_set_t cpuset;
unsigned int i, j;
- int ret, events = EPOLLIN;
+ int ret = 0, events = EPOLLIN;
if (oneshot)
events |= EPOLLONESHOT;
@@ -18,7 +18,7 @@ static void testcase(void)
int i;
for (i = 0; i < NR_ITERS; i++) {
- char proc_name[10];
+ char proc_name[15];
snprintf(proc_name, sizeof(proc_name), "p:%d\n", i);
prctl(PR_SET_NAME, proc_name);
Optimization level '-Og' offers a reasonable level of optimization while maintaining fast compilation and a good debugging experience. This patch tries to make it work. $ make DEBUG=1 EXTRA_CFLAGS='-Og' bench/epoll-ctl.c: In function ‘do_threads’: bench/epoll-ctl.c:274:9: error: ‘ret’ may be used uninitialized in this function [-Werror=maybe-uninitialized] return ret; ^~~ ... Signed-off-by: Changbin Du <changbin.du@gmail.com> --- tools/lib/bpf/libbpf.c | 2 +- tools/perf/bench/epoll-ctl.c | 2 +- tools/perf/bench/epoll-wait.c | 2 +- tools/perf/tests/backward-ring-buffer.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-)