| Message ID | 20211012030116.184027-1-davidcomponentone@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Fix application of sizeof to pointer | expand |
On 12.10.21 05:01, davidcomponentone@gmail.com wrote: > From: David Yang <davidcomponentone@gmail.com> > > The coccinelle check report: > "./tools/testing/selftests/vm/split_huge_page_test.c:344:36-42: > ERROR: application of sizeof to pointer" > Using the "strlen" to fix it. > > Reported-by: Zeal Robot <zealci@zte.com.cn> > Signed-off-by: David Yang <davidcomponentone@gmail.com> > --- > tools/testing/selftests/vm/split_huge_page_test.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/vm/split_huge_page_test.c b/tools/testing/selftests/vm/split_huge_page_test.c > index 1af16d2c2a0a..52497b7b9f1d 100644 > --- a/tools/testing/selftests/vm/split_huge_page_test.c > +++ b/tools/testing/selftests/vm/split_huge_page_test.c > @@ -341,7 +341,7 @@ void split_file_backed_thp(void) > } > > /* write something to the file, so a file-backed THP can be allocated */ > - num_written = write(fd, tmpfs_loc, sizeof(tmpfs_loc)); > + num_written = write(fd, tmpfs_loc, strlen(tmpfs_loc) + 1); > close(fd); > > if (num_written < 1) { > I think the code really just wants to write anything to the file that will be >= 1, which is also the case with this weird usage of sizeof. As an alternative, I think we can just write anything else to the file num_written = write(fd, (void *)&fd, sizeof(fd)); or num_written = write(fd, "1", 1); If I am not wrong/
diff --git a/tools/testing/selftests/vm/split_huge_page_test.c b/tools/testing/selftests/vm/split_huge_page_test.c index 1af16d2c2a0a..52497b7b9f1d 100644 --- a/tools/testing/selftests/vm/split_huge_page_test.c +++ b/tools/testing/selftests/vm/split_huge_page_test.c @@ -341,7 +341,7 @@ void split_file_backed_thp(void) } /* write something to the file, so a file-backed THP can be allocated */ - num_written = write(fd, tmpfs_loc, sizeof(tmpfs_loc)); + num_written = write(fd, tmpfs_loc, strlen(tmpfs_loc) + 1); close(fd); if (num_written < 1) {