selftests: cachestat: Fix warning on declaration under label
Fix warning caused from declaration under a case label. The proper way
is to declare variable at the beginning of the function. The warning
came from running clang using LLVM=1; and is as follows:
-test_cachestat.c:260:3: warning: label followed by a declaration is a C23 extension [-Wc23-extensions]
260 | char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE,
|
Link: https://lore.kernel.org/r/20250929115405.25695-2-sidharthseela@gmail.com
Signed-off-by: Sidharth Seela <sidharthseela@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: wang lian <lianux.mm@gmail.com>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Nhat Pham <nphamcs@gmail.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c
index c952640..ab838bcb 100644
--- a/tools/testing/selftests/cachestat/test_cachestat.c
+++ b/tools/testing/selftests/cachestat/test_cachestat.c
@@ -226,7 +226,7 @@ bool run_cachestat_test(enum file_type type)
int syscall_ret;
size_t compute_len = PS * 512;
struct cachestat_range cs_range = { PS, compute_len };
- char *filename = "tmpshmcstat";
+ char *filename = "tmpshmcstat", *map;
struct cachestat cs;
bool ret = true;
int fd;
@@ -257,7 +257,7 @@ bool run_cachestat_test(enum file_type type)
}
break;
case FILE_MMAP:
- char *map = mmap(NULL, filesize, PROT_READ | PROT_WRITE,
+ map = mmap(NULL, filesize, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if (map == MAP_FAILED) {
