Lower the maximum call depth for debug builds

Also merge VME::exec and VME::run together, so there is one less frame
on the stack.

Change-Id: I7268e0b1f16fc75766c0c9b7b5e14b9885e6fe7c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 5 insertions, 0 deletions

diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index 568413bc57..90e705e42f 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -145,7 +145,12 @@ ExecutionEngine::ExecutionEngine()
         bool ok = false;
         maxCallDepth = qEnvironmentVariableIntValue("QV4_MAX_CALL_DEPTH", &ok);
         if (!ok || maxCallDepth <= 0) {
+#ifdef QT_NO_DEBUG
             maxCallDepth = 1234;
+#else
+            // no (tail call) optimization is done, so there'll be a lot mare stack frames active
+            maxCallDepth = 200;
+#endif
         }
     }
     Q_ASSERT(maxCallDepth > 0);