GCC 13.2.0 reported warning about (void *) being used as a param where (char *)
is expected:
In file included from msg_oob.c:14:
msg_oob.c: In function ‘__recvpair’:
../../kselftest_harness.h:106:40: warning: format ‘%s’ expects argument of type ‘char *’, \
but argument 6 has type ‘const void *’ [-Wformat=]
106 | fprintf(TH_LOG_STREAM, "# %s:%d:%s:" fmt "\n", \
| ^~~~~~~~~~~~~
../../kselftest_harness.h:101:17: note: in expansion of macro ‘__TH_LOG’
101 | __TH_LOG(fmt, ##__VA_ARGS__); \
| ^~~~~~~~
msg_oob.c:235:17: note: in expansion of macro ‘TH_LOG’
235 | TH_LOG("Expected:%s", expected_errno ? strerror(expected_errno) : expected_buf);
| ^~~~~~
../../kselftest_harness.h:106:40: warning: format ‘%s’ expects argument of type ‘char *’, \
but argument 6 has type ‘const void *’ [-Wformat=]
106 | fprintf(TH_LOG_STREAM, "# %s:%d:%s:" fmt "\n", \
| ^~~~~~~~~~~~~
../../kselftest_harness.h:101:17: note: in expansion of macro ‘__TH_LOG’
101 | __TH_LOG(fmt, ##__VA_ARGS__); \
| ^~~~~~~~
msg_oob.c:259:25: note: in expansion of macro ‘TH_LOG’
259 | TH_LOG("Expected:%s", expected_errno ? strerror(expected_errno) : expected_buf);
| ^~~~~~
As Simon suggested, all calls to __recvpair() have char * as expected_buf param, so
it is safe to change param type from (const void *) to (const char *), which silences
the warning.
Fixes: d098d77232c37 ("selftest: af_unix: Add msg_oob.c.")
Reported-by: Mirsad Todorovac <mtodorovac69@xxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-kselftest@xxxxxxxxxxxxxxx
Suggested-by: Simon Horman <horms@xxxxxxxxxx>
Signed-off-by: Mirsad Todorovac <mtodorovac69@xxxxxxxxx>
---
v1 -> v2:
fixed a typo.
change funct param type rather than making two casts, as Simon suggested.
changed Subject: line to reflect the modification.
minor formatting changes.
v1:
initial version to fix the compiler warning.
tools/testing/selftests/net/af_unix/msg_oob.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/net/af_unix/msg_oob.c b/tools/testing/selftests/net/af_unix/msg_oob.c
index 16d0c172eaeb..535eb2c3d7d1 100644
--- a/tools/testing/selftests/net/af_unix/msg_oob.c
+++ b/tools/testing/selftests/net/af_unix/msg_oob.c
@@ -209,7 +209,7 @@ static void __sendpair(struct __test_metadata *_metadata,
static void __recvpair(struct __test_metadata *_metadata,
FIXTURE_DATA(msg_oob) *self,
- const void *expected_buf, int expected_len,
+ const char *expected_buf, int expected_len,
int buf_len, int flags)
{
int i, ret[2], recv_errno[2], expected_errno = 0;
--
2.43.0
