Re: c++/5749: Internal compiler error

Re: c++/5749: Internal compiler error

[tHE rEAL uSER]

The following reply was made to PR c++/5749; it has been noted by GNATS.

From: tHE rEAL uSER <metaf4@pseudonym.org>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org,
 	metaf4@pseudonym.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/5749: Internal compiler error
Date: Fri, 22 Feb 2002 09:13:54 +0100

 Hello Maintainers !
 ===================
 
 > Synopsis: Internal compiler error
 > 
 > State-Changed-From-To: open->feedback
 > State-Changed-By: rodrigc
 > State-Changed-When: Thu Feb 21 20:39:02 2002
 > State-Changed-Why:
 >
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5749
 
 Currently I can't update my compiler to figured out what's wrong.
 c++ 2.95.2 did not give me any warnings or hints.
 (c++ cpp_ptr.cpp -Wall -W -Wtraditional -pedantic -ansi
 -Wbad-function-cast)
 
 Perhaps can fix the code with braces like that, but I don't believe in:
 	void (ZClass::*xxptr[3])() = { (&ZClass::draw1), (&ZClass::draw2), 0 };
 
 Can you submit your compiler options ?
 
 There is a new interesting fact in the main function: the problem seems
 to be in the index. All numbers greater or equal than 3 crashes the
 compiler, except we have one or zero argument.
 
 int main(){
 	// *** this abort my compiler
         // void (ZClass::*xxptr[3])() = { &ZClass::draw1,
 &ZClass::draw2, 0 };
         // void (ZClass::*xxptr[3])() = { &ZClass::draw1 };
         // void (ZClass::*xxptr[4])() = { &ZClass::draw1 };
         // void (ZClass::*xxptr[5])() = { &ZClass::draw1 };
         // void (ZClass::*xxptr[6])() = { &ZClass::draw1 };
         // void (ZClass::*xxptr[16])() = { &ZClass::draw1 };
         // void (ZClass::*xxptr[10])() = { &ZClass::draw1 };
 
 	// but this works
         // void (ZClass::*xxptr[2])() = { &ZClass::draw2, 0 };
         // void (ZClass::*xxptr[3])() = { 0 };
         return 0;
 }
 
 Thomas Graf

Re: c++/5749: Internal compiler error

[rodrigc]

Synopsis: Internal compiler error

State-Changed-From-To: feedback->closed
State-Changed-By: rodrigc
State-Changed-When: Sat Feb 23 15:25:38 2002
State-Changed-Why:
    ICE does not occur in gcc 3.0.4.  For general C++ questions,
    refer to another resource such as the comp.lang.c++.moderated
    Usenet newsgroup.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5749

Re: c++/5749: Internal compiler error

[rodrigc]

Synopsis: Internal compiler error

State-Changed-From-To: open->feedback
State-Changed-By: rodrigc
State-Changed-When: Thu Feb 21 20:39:02 2002
State-Changed-Why:
    With gcc 3.0.4, the compiler does not crash, but there
    is an error in your code:
    
    cpp_ptr.cpp: In function `int main()':
    cpp_ptr.cpp:14: assuming pointer to member `void ZClass::draw1()'
    cpp_ptr.cpp:14: (a pointer to member can only be formed with `&ZClass::draw1')
    
    Can you fix your code?

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=5749

c++/5749: Internal compiler error

[metaf4]

>Number:         5749
>Category:       c++
>Synopsis:       Internal compiler error
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 21 17:26:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Thomas Graf
>Release:        unkown-0.1
>Organization:
>Environment:
Linux i386 SuSE 6.1, 6.4, 7.2
>Description:
Internal compiler error in `const_hash', at varasm.c:2372
===
English is not my native language so forgive me, if I have
misunderstood your advices to fill out this form
the line numbers (varasm:2372) vary a little bit from system 
to system
===
I paste the C++ file and the error messages here, because
they are short, the preprocessor output is attached
//  c++ -o cpp_ptr cpp_ptr.cpp -Wall -W -g
#include <stdio.h>
#include <stdlib.h>
class ZClass{
public:
        void draw1(){
                puts(" *** \"draw1()\"");
        }
        void draw2(){
                puts(" ### \"draw2()\"");
        }
};
int main(){
        void (ZClass::*xxptr[3])() = { &ZClass::draw1, &ZClass::draw2, 0 };
        return 0;
}

===
Reading specs from /usr/lib/gcc-lib/i486-suse-linux/2.95.2/specs
gcc version 2.95.2 19991024 (release)
 /usr/lib/gcc-lib/i486-suse-linux/2.95.2/cpp -lang-c++ -v -D__GNUC__=2 -D__GNUG__=2 -D__GNUC_MINOR__=95 -D__cplusplus -D__ELF__ -Dunix -D__i386__ -Dlinux -D__ELF__ -D__unix__ -D__i386__ -D__linux__ -D__unix -D__linux -Asystem(posix) -D__EXCEPTIONS -Acpu(i386) -Amachine(i386) -Di386 -D__i386 -D__i386__ -Di486 -D__i486 -D__i486__ cpp_ptr.cpp cpp_ptr.ii
GNU CPP version 2.95.2 19991024 (release) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/g++
 /usr/local/include
 /usr/lib/gcc-lib/i486-suse-linux/2.95.2/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
 /usr/lib/gcc-lib/i486-suse-linux/2.95.2/../../../../i486-suse-linux/include
End of omitted list.
 /usr/lib/gcc-lib/i486-suse-linux/2.95.2/cc1plus cpp_ptr.ii -quiet -dumpbase cpp_ptr.cc -version -o cpp_ptr.s
GNU C++ version 2.95.2 19991024 (release) (i486-suse-linux) compiled by GNU C version 2.95.2 19991024 (release).
cpp_ptr.cpp: In function `int main()':
cpp_ptr.cpp:20: Internal compiler error in `const_hash', at varasm.c:2372
Please submit a full bug report.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>How-To-Repeat:
c++ -v -save-temps cpp_ptr.cpp -Wall -W -g
but goes without -Wall -W -g too
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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