add a warning on an incorrect usage of QLock

Merge-request: 1237
Reviewed-by: Harald Fernengel <harald.fernengel@nokia.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gui/embedded/qlock.cpp b/src/gui/embedded/qlock.cpp
index 8f24e7d..034f5fb 100644
--- a/src/gui/embedded/qlock.cpp
+++ b/src/gui/embedded/qlock.cpp
@@ -272,6 +272,8 @@ void QLock::lock(Type t)
                 qDebug("Semop lock failure %s",strerror(errno));
         } while (rv == -1 && errno == EINTR);
 #endif
+    } else if (type == Read && t == Write) {
+        qDebug("QLock::lock: Attempt to lock for write while locked for read");
     }
     data->count++;
 }