| From: Anshuman Khandual <anshuman.khandual@arm.com> |
| Subject: selftests/mm: fix compiler -Wmaybe-uninitialized warning |
| Date: Wed, 9 Apr 2025 15:20:06 +0530 |
| |
| Following build warning comes up for cow test as 'transferred' variable has |
| not been initialized. Fix the warning via zero init for the variable. |
| |
| CC cow |
| cow.c: In function `do_test_vmsplice_in_parent': |
| cow.c:365:61: warning: `transferred' may be used uninitialized [-Wmaybe-uninitialized] |
| 365 | cur = read(fds[0], new + total, transferred - total); |
| | ~~~~~~~~~~~~^~~~~~~ |
| cow.c:296:29: note: `transferred' was declared here |
| 296 | ssize_t cur, total, transferred; |
| | ^~~~~~~~~~~ |
| CC compaction_test |
| CC gup_longterm |
| |
| Link: https://lkml.kernel.org/r/20250409095006.1422620-1-anshuman.khandual@arm.com |
| Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> |
| Cc: Shuah Khan <shuah@kernel.org> |
| Cc: Anshuman Khandual <anshuman.khandual@arm.com> |
| Cc: David Hildenbrand <david@redhat.com> |
| Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
| --- |
| |
| tools/testing/selftests/mm/cow.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/tools/testing/selftests/mm/cow.c~selftests-mm-fix-compiler-wmaybe-uninitialized-warning |
| +++ a/tools/testing/selftests/mm/cow.c |
| @@ -293,7 +293,7 @@ static void do_test_vmsplice_in_parent(c |
| .iov_base = mem, |
| .iov_len = size, |
| }; |
| - ssize_t cur, total, transferred; |
| + ssize_t cur, total, transferred = 0; |
| struct comm_pipes comm_pipes; |
| char *old, *new; |
| int ret, fds[2]; |
| _ |
