Re: c++/10661: ICE in instantiate_decl, at cp/pt.c:10052 while instantiating static member variables

[giovannibajo@libero.it]

Old Synopsis: [3.3/3.4? regression] ICE in instantiate_decl
New Synopsis: ICE in instantiate_decl, at cp/pt.c:10052 while instantiating static member variables

Responsible-Changed-From-To: bajo->unassigned
Responsible-Changed-By: bajo
Responsible-Changed-When: Thu May  8 17:07:36 2003
Responsible-Changed-Why:
    Analysys is done
State-Changed-From-To: open->analyzed
State-Changed-By: bajo
State-Changed-When: Thu May  8 17:07:36 2003
State-Changed-Why:
    Ok, I'm done with this report. This is the reduced
    snippet that triggers the bug:
    
    ------------------------------------------------
    template <class A>
    struct Foo
    {
    	static const int var = 0; 
    
    	template <class>
    	struct Nested
    	{
    		static const int nested_var = var;
    	}; 
    };
    
    template <class A>
    struct Bar
    {
        typename Foo<A>::Nested<void> a;
    };
    
    template struct Bar<void>;
    ------------------------------------------------
    pr10661.cpp: In instantiation of `const int Foo<void>::var':
    pr10661.cpp:9:   instantiated from `Foo<void>::Nested<void>'
    pr10661.cpp:16:   instantiated from `Bar<void>'
    pr10661.cpp:19:   instantiated from here
    pr10661.cpp:4: internal compiler error: in instantiate_decl, at cp/pt.c:10330
    Please submit a full bug report,
    
    As anticipated, the code is illegal: it's missing a
    keyword 'template' in line 16, but we should not ICE
    anyway. Now the funny thing is, this reduced snippet
    is not a regression. I have no _clue_ why the original
    big testcase did compile on 3.2, probably for some weird
    reason. And I will _not_ go through everything again to
    find the difference, since there is an easy fix for this:
    just make the code legal. 
    Anyway, while working on this I forked out about 10 other
    ICEs, which I will file to GNATS and analyze in the next
    few days.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10661