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bpf, verifier: annotate verbose printer with __printf

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The verbose() printer dumps the verifier state to user space, so let gcc
take care to check calls to verbose() for (future) errors. make with W=1
correctly suggests: function might be possible candidate for 'gnu_printf'
format attribute [-Wsuggest-attribute=format].

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2015-11-03 11:39:20 +01:00 committed by David S. Miller
parent 85013ab572
commit 1d056d9c95
1 changed files with 1 additions and 1 deletions
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kernel/bpf/verifier.c
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@ -214,7 +214,7 @@ static DEFINE_MUTEX(bpf_verifier_lock);
* verbose() is used to dump the verification trace to the log, so the user
* can figure out what's wrong with the program
*/
static void verbose(const char *fmt, ...)
static __printf(1, 2) void verbose(const char *fmt, ...)
{
va_list args;