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-rw-r--r--src/libstrongswan/crypto/prfs/prf.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libstrongswan/crypto/prfs/prf.h b/src/libstrongswan/crypto/prfs/prf.h
index 05380b5f2..a360a968a 100644
--- a/src/libstrongswan/crypto/prfs/prf.h
+++ b/src/libstrongswan/crypto/prfs/prf.h
@@ -113,8 +113,10 @@ struct prf_t {
* Set the key for this prf_t object.
*
* @param key key to set
+ * @return TRUE if key set successfully
*/
- void (*set_key) (prf_t *this, chunk_t key);
+ __attribute__((warn_unused_result))
+ bool (*set_key) (prf_t *this, chunk_t key);
/**
* Destroys a prf object.