make warnings go away

[model-checker-benchmarks.git] / mpmc-queue / mpmc-queue.cc

diff --git a/mpmc-queue/mpmc-queue.cc b/mpmc-queue/mpmc-queue.cc
index b62d8d31f496bce7a686332aad23ef7140e56653..7de14d589c5819b9055618928eae43accc2f15bd 100644 (file)
--- a/mpmc-queue/mpmc-queue.cc
+++ b/mpmc-queue/mpmc-queue.cc
@@ -18,7 +18,7 @@ void threadA(struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> *queue)
 void threadB(struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> *queue)
 {
        int32_t *bin;
-       while (bin = queue->read_fetch()) {
+       while ((bin = queue->read_fetch()) != NULL) {
                printf("Read: %d\n", load_32(bin));
                queue->read_consume();
        }
@@ -30,7 +30,7 @@ void threadC(struct mpmc_boundq_1_alt<int32_t, sizeof(int32_t)> *queue)
        store_32(bin, 1);
        queue->write_publish();
 
-       while (bin = queue->read_fetch()) {
+       while ((bin = queue->read_fetch()) != NULL) {
                printf("Read: %d\n", load_32(bin));
                queue->read_consume();
        }