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C++: Guard against parent binding loop

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Task-number: QTCREATORBUG-16146
Change-Id: Ib2a790954517859acd7ca5f16c7d889d28208fb0
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
This commit is contained in:
Nikolai Kosjar
2016-04-27 13:24:14 +02:00
committed by Erik Verbruggen
parent c4f9c6f265
commit a717e980e7
3 changed files with 55 additions and 4 deletions
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18
src/libs/cplusplus/LookupContext.cpp
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@@ -88,10 +88,10 @@ static bool isNestedInstantiationEnclosingTemplate(
ClassOrNamespace *nestedClassOrNamespaceInstantiation,
ClassOrNamespace *enclosingTemplateClassInstantiation)
{
QList<ClassOrNamespace *> processed;
QSet<ClassOrNamespace *> processed;
while (enclosingTemplateClassInstantiation
&& !processed.contains(enclosingTemplateClassInstantiation)) {
processed.append(enclosingTemplateClassInstantiation);
processed.insert(enclosingTemplateClassInstantiation);
if (enclosingTemplateClassInstantiation == nestedClassOrNamespaceInstantiation)
return false;
enclosingTemplateClassInstantiation = enclosingTemplateClassInstantiation->parent();
@@ -454,8 +454,13 @@ QList<LookupItem> LookupContext::lookup(const Name *name, Scope *scope) const
candidates = binding->find(name);
// try find this name in parent class
while (candidates.isEmpty() && (binding = binding->parent()))
QSet<ClassOrNamespace *> processed;
while (candidates.isEmpty() && (binding = binding->parent())) {
if (processed.contains(binding))
break;
processed.insert(binding);
candidates = binding->find(name);
}
if (! candidates.isEmpty())
return candidates;
@@ -1143,8 +1148,13 @@ ClassOrNamespace *ClassOrNamespace::nestedType(const Name *name, ClassOrNamespac
instantiation->_name = templId;
instantiation->_templateId = templId;
while (!origin->_symbols.isEmpty() && origin->_symbols[0]->isBlock())
QSet<ClassOrNamespace *> processed;
while (!origin->_symbols.isEmpty() && origin->_symbols[0]->isBlock()) {
if (processed.contains(origin))
break;
processed.insert(origin);
origin = origin->parent();
}
instantiation->_instantiationOrigin = origin;