[Minor] silence warnings about unused function results

GCC does not respect `(void) func()`

3 files changed, 19 insertions, 19 deletions

diff --git a/contrib/kann/kann.c b/contrib/kann/kann.c
index 76ade6a52..72fb0c061 100644
--- a/contrib/kann/kann.c
+++ b/contrib/kann/kann.c
@@ -496,7 +496,7 @@ kann_t *kann_load_fp(FILE *fp)
 	kann_t *ann;
 	int n_var, n_const;
 
-	fread(magic, 1, 4, fp);
+	(void) !fread(magic, 1, 4, fp);
 	if (strncmp(magic, KANN_MAGIC, 4) != 0) {
 		fclose(fp);
 		return 0;
@@ -508,8 +508,8 @@ kann_t *kann_load_fp(FILE *fp)
 	ann->x = (float*)malloc(n_var * sizeof(float));
 	ann->g = (float*)calloc(n_var, sizeof(float));
 	ann->c = (float*)malloc(n_const * sizeof(float));
-	fread(ann->x, sizeof(float), n_var, fp);
-	fread(ann->c, sizeof(float), n_const, fp);
+	(void) !fread(ann->x, sizeof(float), n_var, fp);
+	(void) !fread(ann->c, sizeof(float), n_const, fp);
 	kad_ext_sync(ann->n, ann->v, ann->x, ann->g, ann->c);
 	return ann;
 }
diff --git a/contrib/kann/kautodiff.c b/contrib/kann/kautodiff.c
index bc9458f42..47a86a71e 100644
--- a/contrib/kann/kautodiff.c
+++ b/contrib/kann/kautodiff.c
@@ -617,28 +617,28 @@ static kad_node_t *kad_load1(FILE *fp, kad_node_t **node)
 {
 	kad_node_t *p;
 	p = (kad_node_t*)calloc(1, sizeof(kad_node_t));
-	fread(&p->ext_label, 4, 1, fp);
-	fread(&p->ext_flag, 4, 1, fp);
-	fread(&p->flag, 1, 1, fp);
-	fread(&p->n_child, 4, 1, fp);
+	(void) !fread(&p->ext_label, 4, 1, fp);
+	(void) !fread(&p->ext_flag, 4, 1, fp);
+	(void) !fread(&p->flag, 1, 1, fp);
+	(void) !fread(&p->n_child, 4, 1, fp);
 	if (p->n_child) {
 		int32_t j, k;
 		p->child = (kad_node_t**)calloc(p->n_child, sizeof(kad_node_t*));
-		fread(&p->op, 2, 1, fp);
+		(void) !fread(&p->op, 2, 1, fp);
 		for (j = 0; j < p->n_child; ++j) {
-			fread(&k, 4, 1, fp);
+			(void) !fread(&k, 4, 1, fp);
 			p->child[j] = node? node[k] : 0;
 		}
-		fread(&k, 4, 1, fp);
+		(void) !fread(&k, 4, 1, fp);
 		if (k >= 0) p->pre = node[k];
-		fread(&p->ptr_size, 4, 1, fp);
+		(void) !fread(&p->ptr_size, 4, 1, fp);
 		if (p->ptr_size > 0) {
 			p->ptr = malloc(p->ptr_size);
-			fread(p->ptr, p->ptr_size, 1, fp);
+			(void) !fread(p->ptr, p->ptr_size, 1, fp);
 		}
 	} else {
-		fread(&p->n_d, 1, 1, fp);
-		if (p->n_d) fread(p->d, 4, p->n_d, fp);
+		(void) !fread(&p->n_d, 1, 1, fp);
+		if (p->n_d) (void) !fread(p->d, 4, p->n_d, fp);
 	}
 	return p;
 }
@@ -657,7 +657,7 @@ kad_node_t **kad_load(FILE *fp, int *_n_node)
 {
 	int32_t i, n_node;
 	kad_node_t **node;
-	fread(&n_node, 4, 1, fp);
+	(void) !fread(&n_node, 4, 1, fp);
 	node = (kad_node_t**)malloc(n_node * sizeof(kad_node_t*));
 	for (i = 0; i < n_node; ++i) {
 		kad_node_t *p;
diff --git a/contrib/libev/ev.c b/contrib/libev/ev.c
index 12eafd8a4..533b19e3d 100644
--- a/contrib/libev/ev.c
+++ b/contrib/libev/ev.c
@@ -2808,7 +2808,7 @@ evpipe_write (EV_P_ EV_ATOMIC_T *flag)
       if (evpipe [0] < 0)
         {
           uint64_t counter = 1;
-          write (evpipe [1], &counter, sizeof (uint64_t));
+          (void) !write (evpipe [1], &counter, sizeof (uint64_t));
         }
       else
 #endif
@@ -2820,7 +2820,7 @@ evpipe_write (EV_P_ EV_ATOMIC_T *flag)
           buf.len = 1;
           WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
 #else
-          write (evpipe [1], &(evpipe [1]), 1);
+          (void) !write (evpipe [1], &(evpipe [1]), 1);
 #endif
         }
 
@@ -2841,7 +2841,7 @@ pipecb (EV_P_ ev_io *iow, int revents)
       if (evpipe [0] < 0)
         {
           uint64_t counter;
-          read (evpipe [1], &counter, sizeof (uint64_t));
+          (void) !read (evpipe [1], &counter, sizeof (uint64_t));
         }
       else
 #endif
@@ -2855,7 +2855,7 @@ pipecb (EV_P_ ev_io *iow, int revents)
           buf.len = sizeof (dummy);
           WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
 #else
-          read (evpipe [0], &dummy, sizeof (dummy));
+          (void) !read (evpipe [0], &dummy, sizeof (dummy));
 #endif
         }
     }