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CppEditor: Fix possible crash when following typdefs

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It's probably also a bug that we don't resolve the identically-named
struct correctly, but at least we don't crash anymore.

Fixes: QTCREATORBUG-26047
Change-Id: I272e76460c87906c9df23aaf7f37953b451bf1a8
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
This commit is contained in:
Christian Kandeler
2021-07-28 17:15:24 +02:00
parent e36d54bdd7
commit 2e7891bedd
2 changed files with 11 additions and 3 deletions
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9
src/plugins/cpptools/typehierarchybuilder.cpp
View File

@@ -146,7 +146,9 @@ TypeHierarchy TypeHierarchyBuilder::buildDerivedTypeHierarchy(QFutureInterfaceBa
return hierarchy;
}
LookupItem TypeHierarchyBuilder::followTypedef(const LookupContext &context, const Name *symbolName, Scope *enclosingScope)
LookupItem TypeHierarchyBuilder::followTypedef(const LookupContext &context, const Name *symbolName,
Scope *enclosingScope,
std::set<const Symbol *> typedefs)
{
QList<LookupItem> items = context.lookup(symbolName, enclosingScope);
@@ -159,6 +161,8 @@ LookupItem TypeHierarchyBuilder::followTypedef(const LookupContext &context, con
continue;
if (!s->isClass() && !s->isTemplate() && !s->isTypedef())
continue;
if (!typedefs.insert(s).second)
continue;
actualBaseSymbol = s;
matchingItem = item;
break;
@@ -173,7 +177,8 @@ LookupItem TypeHierarchyBuilder::followTypedef(const LookupContext &context, con
// Anonymous aggregate such as: typedef struct {} Empty;
return LookupItem();
}
return followTypedef(context, namedType->name(), actualBaseSymbol->enclosingScope());
return followTypedef(context, namedType->name(), actualBaseSymbol->enclosingScope(),
typedefs);
}
return matchingItem;

5
src/plugins/cpptools/typehierarchybuilder.h
View File

@@ -34,6 +34,8 @@
#include <QList>
#include <QSet>
#include <set>
namespace CPlusPlus {
class LookupContext;
class LookupItem;
@@ -72,7 +74,8 @@ public:
const CPlusPlus::Snapshot &snapshot);
static CPlusPlus::LookupItem followTypedef(const CPlusPlus::LookupContext &context,
const CPlusPlus::Name *symbolName,
CPlusPlus::Scope *enclosingScope);
CPlusPlus::Scope *enclosingScope,
std::set<const CPlusPlus::Symbol *> typedefs = {});
private:
TypeHierarchyBuilder() = default;
void buildDerived(QFutureInterfaceBase &futureInterface, TypeHierarchy *typeHierarchy,