1 files changed, 3 insertions, 1 deletions
diff --git a/src/qml/debugger/qqmldebug.cpp b/src/qml/debugger/qqmldebug.cpp
index b9d984db1d..69ca51d3de 100644
--- a/src/qml/debugger/qqmldebug.cpp
+++ b/src/qml/debugger/qqmldebug.cpp
@@ -25,8 +25,10 @@ Q_CONSTINIT static std::atomic_flag s_printedWarning = Q_ATOMIC_FLAG_INIT;
 
 void QQmlDebuggingEnabler::enableDebugging(bool printWarning)
 {
-    if (printWarning && !s_printedWarning.test_and_set(std::memory_order_relaxed))
+    if (printWarning && !s_printedWarning.test_and_set(std::memory_order_relaxed)) {
         fprintf(stderr, "QML debugging is enabled. Only use this in a safe environment.\n");
+        fflush(stderr); // We really want to print this warning, even if stderr is buffered
+    }
     QQmlEnginePrivate::qml_debugging_enabled.store(true, std::memory_order_relaxed);
 }