From 8fd3cfe7d0f39a731c585334299f5160ad952df9 Mon Sep 17 00:00:00 2001
From: Erik Verbruggen <erik.verbruggen@qt.io>
Date: Mon, 14 Jan 2019 14:21:21 +0100
Subject: Annotate stack traces when frames are elided through tail calls

Task-number: QTBUG-72407
Change-Id: I98b96852309fc783a945797185f666196513d24b
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
---
 src/qml/jsruntime/qv4engine.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/qml/jsruntime/qv4engine.cpp')

diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index 57a364b205..f00578aa70 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -1011,6 +1011,11 @@ StackTrace ExecutionEngine::stackTrace(int frameLimit) const
         frame.line = qAbs(f->lineNumber());
         frame.column = -1;
         stack.append(frame);
+        if (f->isTailCalling) {
+            QV4::StackFrame frame;
+            frame.function = QStringLiteral("[elided tail calls]");
+            stack.append(frame);
+        }
         --frameLimit;
         f = f->parent;
     }
-- 
cgit v1.2.3