On Thu, 18 Jul 2024 11:10:39 +0800 Jiapeng Chong <jiapeng.chong@xxxxxxxxxxxxxxxxx> wrote: > Avoid pointer type value compared with 0 to make code clear. > > ./tools/testing/selftests/mm/mseal_test.c:486:27-28: WARNING comparing pointer to 0. > ./tools/testing/selftests/mm/mseal_test.c:1399:29-30: WARNING comparing pointer to 0. > > ... > > --- a/tools/testing/selftests/mm/mseal_test.c > +++ b/tools/testing/selftests/mm/mseal_test.c > @@ -481,9 +481,8 @@ static void test_seal_zero_address(void) > int prot; > > /* use mmap to change protection. */ > - ptr = sys_mmap(0, size, PROT_NONE, > - MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); > - FAIL_TEST_IF_FALSE(ptr == 0); > + ptr = sys_mmap(0, size, PROT_NONE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); > + FAIL_TEST_IF_FALSE(!ptr); > @@ -1390,13 +1389,12 @@ static void test_seal_mremap_move_fixed_zero(bool seal) > /* > * MREMAP_FIXED can move the mapping to zero address > */ > - ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED, > - 0); > + ret2 = mremap(ptr, size, 2 * page_size, MREMAP_MAYMOVE | MREMAP_FIXED, 0); The author of this code chose to make it tractable in an 80-column display. It's best not to change that, without explanation.
