Re: c++/10223: template trickery causes ICE (segmentation fault)

["Giovanni Bajo" <giovannibajo@libero.it>]

The following reply was made to PR c++/10223; it has been noted by GNATS.

From: "Giovanni Bajo" <giovannibajo@libero.it>
To: <gcc-gnats@gcc.gnu.org>,
	<hg211@ural2.hszk.bme.hu>,
	<gcc-bugs@gcc.gnu.org>,
	<nobody@gcc.gnu.org>,
	<gcc-prs@gcc.gnu.org>
Cc:  
Subject: Re: c++/10223: template trickery causes ICE (segmentation fault)
Date: Fri, 2 May 2003 19:28:29 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10223
 
 Not really related to c++/9364 (as shown by my recent analysys of that PR).
 Instead, an epurated code snippet of this PR looks this way:
 --------------------------------------------
 template <typename T>
 struct Foo
 {
     template <void (T::*)()>
     struct dummy;
 
     template <typename Q>
     static char test(dummy<&Q::whatever> *);
 };
 
 
 struct Bar {};
 
 template struct Foo<Bar>;
 //template struct Foo<int>;
 --------------------------------------------
 pr10223.cpp: In instantiation of `Foo<Bar>':
 pr10223.cpp:14:   instantiated from here
 pr10223.cpp:8: internal compiler error: Segmentation fault
 Please submit a full bug report,
 
 If you instantiate the template with a basic type instead of Bar (using the
 commented line instead of the other one), we get an ICE on error recovery:
 
 pr10223.cpp: In instantiation of `Foo<int>':
 pr10223.cpp:15:   instantiated from here
 pr10223.cpp:5: error: creating pointer to member function of non-class type
 `int'
 pr10223.cpp:5: internal compiler error: in retrieve_specialization, at
 cp/pt.c:894
 Please submit a full bug report,
 
 I keep both the ICEs in this same PR since they are very likely related.
 Reconfirmed on every GCC version I have (2.95 -> mainline CVS 20030430).
 
 After this redux has been fixed, I suggest trying again the original code
 provided by the poster, which could reveal other problems.
 
 Giovanni Bajo