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-rw-r--r--docs/tutorials/011/message_queue.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/tutorials/011/message_queue.cpp b/docs/tutorials/011/message_queue.cpp
index 168a9793f9f..6e644e6ed8f 100644
--- a/docs/tutorials/011/message_queue.cpp
+++ b/docs/tutorials/011/message_queue.cpp
@@ -5,6 +5,8 @@
#include "task.h"
#include "block.h"
#include "data.h"
+#include "ace/OS_NS_unistd.h"
+#include "ace/OS_NS_string.h"
static int
@@ -38,7 +40,7 @@ run_test (int iterations,
/* As before, put a text message into the block. */
ACE_OS::sprintf (message->wr_ptr (), "This is message %d.", i);
- message->wr_ptr (strlen (message->rd_ptr ()));
+ message->wr_ptr (ACE_OS::strlen (message->rd_ptr ()));
message->wr_ptr (1); // Move beyond the NULL