Infinite recursion in DUContext::findDeclarationsInternal

[Milian Wolff]

Hi guys!

I'm having a bit of a problem while developing the PHP plugin. Take this code:

~~~
class a extends b {}
class b extends c {}
class c extends a {}
~~~

Internally this gets parsed twice to get all declarations. The 
DeclarationBuilder works fine, but the second UseBuilder segfaults because it 
uses findDeclarations which goes into findDeclarationsInternal and segfaults 
then, backtrace shows an infinite recursion in ducontext.cpp:833 if I remember 
correctly.

I'm not sure how I should handle that:

1) Do I have to adapt the DeclarationBuilder to make sure it does not 
introduce circular inheritance?
2) Do I have to write a cleanup/validation function which looks for circular 
inheritance and filters those?
3) Do I have to adapt the UseBuilder?
4) Something other than that?

How does Cpp handle that? It seems to work fine there:
~~~
class A : public B{};
class B : public C{};
class C : public A{};
~~~

-- 
Milian Wolff
mail at milianw.de
http://milianw.de
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