c++/8116: ICE in member template function

c++/8116: ICE in member template function

[yuvalk]

>Number:         8116
>Category:       c++
>Synopsis:       ICE in member template function
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Wed Oct 02 00:06:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Yuval Kfir
>Release:        3.2
>Organization:
Mainsoft Co. Ltd.
>Environment:
System: Linux twins 2.4.18-3custom #1 SMP Thu Sep 19 12:30:28 IDT 2002 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc-3.2/configure --prefix=/usr/gcc/3.2 --enable-languages=c,c++
>Description:
When compiling this small file I get the following message:
...........................................................
tmplbug.cpp: In function `void fff()':
tmplbug.cpp:16: Internal compiler error in tsubst_decl, at cp/pt.c:5648
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
...........................................................
This also happens if the template function is the constructor
of com_ptr.  In fact, any template function inside a template
causes an ICE when it is called.
GCC 2.95.3 compiles this code with no errors or warnings.
>How-To-Repeat:
/*********************************************/
/* Compile the following with `gcc -c x.cpp' */
/*********************************************/
template <class T>
struct MY_PLACEHOLDER {
	static int m_iid;
};

template <const int* iid>
class com_ptr {
public:
	com_ptr() { }
	template<typename Q> bool operator==(Q p){return 1;}
};

void fff()
{
        com_ptr<&MY_PLACEHOLDER<int>::m_iid> A;
        if(A==2){}
}
/*********************************************/
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted:

Re: c++/8116: ICE in member template function

[Reichelt]

The following reply was made to PR c++/8116; it has been noted by GNATS.

From: Reichelt <reichelt@igpm.rwth-aachen.de>
To: gcc-gnats@gcc.gnu.org, yuvalk@mainsoft.com, gcc-bugs@gcc.gnu.org,
        nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/8116: ICE in member template function
Date: Sun, 27 Oct 2002 18:29:45 +0200

 Hi,
 
 here's a little cleaned-up testcase:
 
 ---------------------snip here------------------------
 template <typename T> struct A { static int i; };
 
 template <int*> struct B
 {
     template <typename U> void bar(U);
 };
 
 void foo()
 {
     B<&A<int>::i>().bar(0);
 }
 ---------------------snip here------------------------
 
 Greetings,
 Volker
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8116
 
 

Re: c++/8116: ICE in member template function

[lerdsuwa]

Synopsis: ICE in member template function

State-Changed-From-To: open->analyzed
State-Changed-By: lerdsuwa
State-Changed-When: Sun Oct 27 06:48:46 2002
State-Changed-Why:
    Confirmed as a regression from GCC 3.0.  The bug is fixed in the main line.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8116