From 63e16d6346c2525fc93234437c9a1f2d7da63f34 Mon Sep 17 00:00:00 2001
From: Nikolai Kosjar <nikolai.kosjar@qt.io>
Date: Mon, 7 Aug 2017 12:36:22 +0200
Subject: C++: Limit number of nested class instantiations

...to avoid out of memory crashes.

Task-number: QTCREATORBUG-18649
Change-Id: I5e121bf4be0fd0c01a97a182ed07ee7552fb68ac
Reviewed-by: Przemyslaw Gorszkowski <pgorszkowski@gmail.com>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
---
 src/libs/cplusplus/LookupContext.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/libs/cplusplus/LookupContext.cpp')

diff --git a/src/libs/cplusplus/LookupContext.cpp b/src/libs/cplusplus/LookupContext.cpp
index 0e9fccead2..3f09e7b1a2 100644
--- a/src/libs/cplusplus/LookupContext.cpp
+++ b/src/libs/cplusplus/LookupContext.cpp
@@ -1387,6 +1387,8 @@ void ClassOrNamespace::instantiateNestedClasses(ClassOrNamespace *enclosingTempl
 void ClassOrNamespace::NestedClassInstantiator::instantiate(ClassOrNamespace *enclosingTemplateClass,
                                                 ClassOrNamespace *enclosingTemplateClassInstantiation)
 {
+    if (_alreadyConsideredNestedClassInstantiations.size() >= 3)
+        return;
     if (_alreadyConsideredNestedClassInstantiations.contains(enclosingTemplateClass))
         return;
     _alreadyConsideredNestedClassInstantiations.insert(enclosingTemplateClass);
-- 
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