aga: Annotate unused return values

bfs_dequeue() and dfs_pop() discard the return values of lqueue_dequeue()
and lstack_pop() respectively.  This is correct, but causes warnings in
some compiler configurations (including the one currently used by
travis-ci.org).

Use the cast-to-void idiom to tell the compiler this is intentional.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/ccan/aga/bfs.c b/ccan/aga/bfs.c
index 64fdd485a2573a3f548c26868f82eb869f6e628e..b41136081f10027dcd6afe49ad743a39ecf9ac10 100644 (file)
--- a/ccan/aga/bfs.c
+++ b/ccan/aga/bfs.c
@@ -32,7 +32,7 @@ static struct aga_node *bfs_front(bfs_queue *queue)
 
 static void bfs_dequeue(bfs_queue *queue)
 {
-       lqueue_dequeue(queue);
+       (void) lqueue_dequeue(queue);
 }
 
 int aga_bfs_start(struct aga_graph *g)

diff --git a/ccan/aga/dfs.c b/ccan/aga/dfs.c
index 5f836ec3c1182ed8f755ed47532f04f2dfb68cae..b8714686e87bde3e8da4f4c901245a06344c271d 100644 (file)
--- a/ccan/aga/dfs.c
+++ b/ccan/aga/dfs.c
@@ -27,7 +27,7 @@ static bool dfs_push(struct aga_graph *g, dfs_stack *stack,
 
 static void dfs_pop(dfs_stack *stack)
 {
-       lstack_pop(stack);
+       (void) lstack_pop(stack);
 }
 
 static struct aga_node *dfs_top(dfs_stack *stack)