From edcc1f6e8029569e0efa0215438b09bd7449e9e2 Mon Sep 17 00:00:00 2001
From: Arthur Camouseigt <arthur.camouseigt@numworks.com>
Date: Fri, 7 Aug 2020 10:27:43 +0200
Subject: [PATCH] [Poincare/integral_layout.cpp] Fixed crash due to infinite
 loop

Changed previousNestedIntegral method to prevent integrals located in
integral bounds to be considered as nested.

Change-Id: Id8cc4369f53c278ac59039fde1c2818af2ccacab
---
 poincare/src/integral_layout.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/poincare/src/integral_layout.cpp b/poincare/src/integral_layout.cpp
index 253d429ca..6d6119560 100644
--- a/poincare/src/integral_layout.cpp
+++ b/poincare/src/integral_layout.cpp
@@ -251,8 +251,13 @@ IntegralLayoutNode * IntegralLayoutNode::previousNestedIntegral() {
     return nullptr;
   }
   if (p->type() == Type::IntegralLayout) {
-    // Parent can be an integral
-    return static_cast<IntegralLayoutNode *>(p);
+    // Parent is an integral. Checking if the child is its integrand or not
+    if (p->childAtIndex(0) == this) {
+      return static_cast<IntegralLayoutNode *>(p);
+    } else {
+      // If this is not parent's integrand, it means that it is either a bound or differential
+      return nullptr;
+    }
   } else if (p->type() == Type::HorizontalLayout) {
     // Or can be a Horizontal layout himself contained in an integral
     LayoutNode * prev = p->parent();