| Message ID | 20240221092728.1281499-4-davidgow@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | kunit: Fix printf format specifier issues in KUnit assertions | expand |
On Wed, Feb 21, 2024 at 05:27:16PM +0800, David Gow wrote: > The 'i' passed as an assertion message is a size_t, so should use '%zu', > not '%d'. > > This was found by annotating the _MSG() variants of KUnit's assertions > to let gcc validate the format strings. > > Fixes: bb95ebbe89a7 ("lib: Introduce CONFIG_MEMCPY_KUNIT_TEST") > Signed-off-by: David Gow <davidgow@google.com> Tested-by: Guenter Roeck <linux@roeck-us.net> > --- > lib/memcpy_kunit.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/lib/memcpy_kunit.c b/lib/memcpy_kunit.c > index 440aee705ccc..30e00ef0bf2e 100644 > --- a/lib/memcpy_kunit.c > +++ b/lib/memcpy_kunit.c > @@ -32,7 +32,7 @@ struct some_bytes { > BUILD_BUG_ON(sizeof(instance.data) != 32); \ > for (size_t i = 0; i < sizeof(instance.data); i++) { \ > KUNIT_ASSERT_EQ_MSG(test, instance.data[i], v, \ > - "line %d: '%s' not initialized to 0x%02x @ %d (saw 0x%02x)\n", \ > + "line %d: '%s' not initialized to 0x%02x @ %zu (saw 0x%02x)\n", \ > __LINE__, #instance, v, i, instance.data[i]); \ > } \ > } while (0) > @@ -41,7 +41,7 @@ struct some_bytes { > BUILD_BUG_ON(sizeof(one) != sizeof(two)); \ > for (size_t i = 0; i < sizeof(one); i++) { \ > KUNIT_EXPECT_EQ_MSG(test, one.data[i], two.data[i], \ > - "line %d: %s.data[%d] (0x%02x) != %s.data[%d] (0x%02x)\n", \ > + "line %d: %s.data[%zu] (0x%02x) != %s.data[%zu] (0x%02x)\n", \ > __LINE__, #one, i, one.data[i], #two, i, two.data[i]); \ > } \ > kunit_info(test, "ok: " TEST_OP "() " name "\n"); \ > -- > 2.44.0.rc0.258.g7320e95886-goog >
Hi, On Wed, Feb 21, 2024 at 05:27:16PM +0800, David Gow wrote: > The 'i' passed as an assertion message is a size_t, so should use '%zu', > not '%d'. > > This was found by annotating the _MSG() variants of KUnit's assertions > to let gcc validate the format strings. > > Fixes: bb95ebbe89a7 ("lib: Introduce CONFIG_MEMCPY_KUNIT_TEST") > Signed-off-by: David Gow <davidgow@google.com> > --- Reviewed-by: Justin Stitt <justinstitt@google.com> > lib/memcpy_kunit.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/lib/memcpy_kunit.c b/lib/memcpy_kunit.c > index 440aee705ccc..30e00ef0bf2e 100644 > --- a/lib/memcpy_kunit.c > +++ b/lib/memcpy_kunit.c > @@ -32,7 +32,7 @@ struct some_bytes { > BUILD_BUG_ON(sizeof(instance.data) != 32); \ > for (size_t i = 0; i < sizeof(instance.data); i++) { \ > KUNIT_ASSERT_EQ_MSG(test, instance.data[i], v, \ > - "line %d: '%s' not initialized to 0x%02x @ %d (saw 0x%02x)\n", \ > + "line %d: '%s' not initialized to 0x%02x @ %zu (saw 0x%02x)\n", \ > __LINE__, #instance, v, i, instance.data[i]); \ > } \ > } while (0) > @@ -41,7 +41,7 @@ struct some_bytes { > BUILD_BUG_ON(sizeof(one) != sizeof(two)); \ > for (size_t i = 0; i < sizeof(one); i++) { \ > KUNIT_EXPECT_EQ_MSG(test, one.data[i], two.data[i], \ > - "line %d: %s.data[%d] (0x%02x) != %s.data[%d] (0x%02x)\n", \ > + "line %d: %s.data[%zu] (0x%02x) != %s.data[%zu] (0x%02x)\n", \ > __LINE__, #one, i, one.data[i], #two, i, two.data[i]); \ > } \ > kunit_info(test, "ok: " TEST_OP "() " name "\n"); \ > -- > 2.44.0.rc0.258.g7320e95886-goog > Thanks Justin
diff --git a/lib/memcpy_kunit.c b/lib/memcpy_kunit.c index 440aee705ccc..30e00ef0bf2e 100644 --- a/lib/memcpy_kunit.c +++ b/lib/memcpy_kunit.c @@ -32,7 +32,7 @@ struct some_bytes { BUILD_BUG_ON(sizeof(instance.data) != 32); \ for (size_t i = 0; i < sizeof(instance.data); i++) { \ KUNIT_ASSERT_EQ_MSG(test, instance.data[i], v, \ - "line %d: '%s' not initialized to 0x%02x @ %d (saw 0x%02x)\n", \ + "line %d: '%s' not initialized to 0x%02x @ %zu (saw 0x%02x)\n", \ __LINE__, #instance, v, i, instance.data[i]); \ } \ } while (0) @@ -41,7 +41,7 @@ struct some_bytes { BUILD_BUG_ON(sizeof(one) != sizeof(two)); \ for (size_t i = 0; i < sizeof(one); i++) { \ KUNIT_EXPECT_EQ_MSG(test, one.data[i], two.data[i], \ - "line %d: %s.data[%d] (0x%02x) != %s.data[%d] (0x%02x)\n", \ + "line %d: %s.data[%zu] (0x%02x) != %s.data[%zu] (0x%02x)\n", \ __LINE__, #one, i, one.data[i], #two, i, two.data[i]); \ } \ kunit_info(test, "ok: " TEST_OP "() " name "\n"); \
The 'i' passed as an assertion message is a size_t, so should use '%zu', not '%d'. This was found by annotating the _MSG() variants of KUnit's assertions to let gcc validate the format strings. Fixes: bb95ebbe89a7 ("lib: Introduce CONFIG_MEMCPY_KUNIT_TEST") Signed-off-by: David Gow <davidgow@google.com> --- lib/memcpy_kunit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)