build: Comply with -Wextra compiler flag

This reduces the risk for some bugs, for instance due to
signed/unsigned mismatches and unused variables.

5 files changed, 21 insertions, 5 deletions

diff --git a/src/lib/bitmap.c b/src/lib/bitmap.c
index e84145b2..916ab2ee 100644
--- a/src/lib/bitmap.c
+++ b/src/lib/bitmap.c
@@ -158,7 +158,7 @@ ssize_t bmp_allocate(struct bmp * b)
         id = (ssize_t) find_next_zero_bit(b->bitmap,
                                           b->size);
 
-        if (id >= b->size)
+        if (id >= (ssize_t) b->size)
                 return bad_id(b);
 
         bitmap_set(b->bitmap, id);
@@ -171,7 +171,7 @@ static bool is_id_valid(struct bmp * b,
 {
         assert(b);
 
-        if ((id < b->offset) || (id > (b->offset + b->size)))
+        if ((id < b->offset) || (id > (ssize_t) (b->offset + b->size)))
                 return false;
 
         return true;
diff --git a/src/lib/dev.c b/src/lib/dev.c
index 146070b7..c349846f 100644
--- a/src/lib/dev.c
+++ b/src/lib/dev.c
@@ -467,6 +467,9 @@ int flow_alloc(char * dst_name, char * src_ae_name, struct qos_spec * qos)
         irm_msg_t * recv_msg = NULL;
         int fd = -1;
 
+        /*  FIXME: add qos support */
+        (void) qos;
+
         if (dst_name == NULL)
                 return -EINVAL;
 
@@ -756,7 +759,7 @@ ssize_t flow_write(int fd, void * buf, size_t count)
 ssize_t flow_read(int fd, void * buf, size_t count)
 {
         int idx = -1;
-        int n;
+        ssize_t n;
         uint8_t * sdu;
 
         if (fd < 0 || fd >= AP_MAX_FLOWS)
@@ -794,7 +797,7 @@ ssize_t flow_read(int fd, void * buf, size_t count)
                 return -1;
         }
 
-        memcpy(buf, sdu, MIN(n, count));
+        memcpy(buf, sdu, MIN(n, (ssize_t) count));
 
         shm_rdrbuff_remove(ai.rdrb, idx);
 
diff --git a/src/lib/nsm.c b/src/lib/nsm.c
index 069db139..654b526b 100644
--- a/src/lib/nsm.c
+++ b/src/lib/nsm.c
@@ -26,6 +26,9 @@ int nsm_reg(char * name,
             char ** dafs,
             size_t dafs_size)
 {
+        (void) name;
+        (void) dafs;
+        (void) dafs_size;
 
         return -1;
 }
@@ -34,6 +37,10 @@ int nsm_unreg(char * name,
               char ** dafs,
               size_t dafs_size)
 {
+        (void) name;
+        (void) dafs;
+        (void) dafs_size;
+
 
         return -1;
 }
@@ -41,5 +48,8 @@ int nsm_unreg(char * name,
 ssize_t nsm_resolve(char * name,
                     char ** dafs)
 {
+        (void) name;
+        (void) dafs;
+
         return -1;
 }
diff --git a/src/lib/shm_rdrbuff.c b/src/lib/shm_rdrbuff.c
index e5a37577..1f93f1c7 100644
--- a/src/lib/shm_rdrbuff.c
+++ b/src/lib/shm_rdrbuff.c
@@ -689,7 +689,7 @@ int shm_rdrbuff_remove(struct shm_rdrbuff * rdrb, ssize_t idx)
 
         idx_to_du_buff_ptr(rdrb, idx)->dst_api = -1;
 
-        if (idx != *rdrb->ptr_tail) {
+        if (idx != (ssize_t) *rdrb->ptr_tail) {
                 pthread_mutex_unlock(rdrb->lock);
                 return 0;
         }
diff --git a/src/lib/tests/bitmap_test.c b/src/lib/tests/bitmap_test.c
index 4d2d0c73..7eb72fe7 100644
--- a/src/lib/tests/bitmap_test.c
+++ b/src/lib/tests/bitmap_test.c
@@ -35,6 +35,9 @@ int bitmap_test(int argc, char ** argv)
         ssize_t r;
         ssize_t offset = 100;
 
+        (void) argc;
+        (void) argv;
+
         srand(time(NULL));
 
         bmp = bmp_create(bits, offset);