diff mbox series

[v3,03/11] selftests/mm: fix "warning: expression which evaluates to zero..." in mlock2-tests.c

Message ID 20230606071637.267103-4-jhubbard@nvidia.com
State New
Headers
Series A minor flurry of selftest/mm fixes |

Commit Message

John Hubbard June 6, 2023, 7:16 a.m. UTC 
  The stop variable is a char*, and the code was assigning a char value to
it. This was generating a warning when compiling with clang.

However, as both David and Peter pointed out, stop is not even used
after the problematic assignment to a char type. So just delete that
line entirely.

Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 tools/testing/selftests/mm/mlock2-tests.c | 1 -
 1 file changed, 1 deletion(-)

Comments

Muhammad Usama Anjum June 6, 2023, 7:49 a.m. UTC | #1 
On 6/6/23 12:16 PM, John Hubbard wrote:
> The stop variable is a char*, and the code was assigning a char value to
> it. This was generating a warning when compiling with clang.
> 
> However, as both David and Peter pointed out, stop is not even used
> after the problematic assignment to a char type. So just delete that
> line entirely.
> 
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Reviewed-by: Peter Xu <peterx@redhat.com>
> Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Tested-by: Muhammad Usama Anjum <usama.anjum@collabora.com>

> ---
>  tools/testing/selftests/mm/mlock2-tests.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/mm/mlock2-tests.c b/tools/testing/selftests/mm/mlock2-tests.c
> index 11b2301f3aa3..80cddc0de206 100644
> --- a/tools/testing/selftests/mm/mlock2-tests.c
> +++ b/tools/testing/selftests/mm/mlock2-tests.c
> @@ -50,7 +50,6 @@ static int get_vm_area(unsigned long addr, struct vm_boundaries *area)
>  			printf("cannot parse /proc/self/maps\n");
>  			goto out;
>  		}
> -		stop = '\0';
>  
>  		sscanf(line, "%lx", &start);
>  		sscanf(end_addr, "%lx", &end);
diff mbox series

Patch

diff --git a/tools/testing/selftests/mm/mlock2-tests.c b/tools/testing/selftests/mm/mlock2-tests.c
index 11b2301f3aa3..80cddc0de206 100644
--- a/tools/testing/selftests/mm/mlock2-tests.c
+++ b/tools/testing/selftests/mm/mlock2-tests.c
@@ -50,7 +50,6 @@  static int get_vm_area(unsigned long addr, struct vm_boundaries *area)
 			printf("cannot parse /proc/self/maps\n");
 			goto out;
 		}
-		stop = '\0';
 
 		sscanf(line, "%lx", &start);
 		sscanf(end_addr, "%lx", &end);