GCC Bugzilla Bug 6620

The attached source-file gives an internal compiler error when compiled with
g++.

jo@bogon:~/units$ g++ -v -c minimal2.cc
Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs
gcc version 2.95.4 20011002 (Debian prerelease)
 /usr/lib/gcc-lib/i386-linux/2.95.4/cpp0 -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__
minimal2.cc /tmp/ccnsOHUh.ii
GNU CPP version 2.95.4 20011002 (Debian prerelease) (i386 Linux/ELF)
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../include/g++-3
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/2.95.4/include
 /usr/include
End of search list.
The following default directories have been omitted from the search path:
 /usr/lib/gcc-lib/i386-linux/2.95.4/../../../../i386-linux/include
End of omitted list.
 /usr/lib/gcc-lib/i386-linux/2.95.4/cc1plus /tmp/ccnsOHUh.ii -quiet -dumpbase
minimal2.cc -version -o /tmp/ccrc1m4k.s
GNU C++ version 2.95.4 20011002 (Debian prerelease) (i386-linux) compiled by
GNU C version 2.95.4 20011002 (Debian prerelease).
minimal2.cc:10: Internal compiler error.
minimal2.cc:10: Please submit a full bug report.
minimal2.cc:10: Internal compiler error:
minimal2.cc:10: See <URL:http://www.gnu.org/software/gcc/bugs.html> for
instructions.



jo@bogon:~/units$ g++-3.0 -v -c minimal2.cc
Reading specs from /usr/lib/gcc-lib/i386-linux/3.0.4/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,proto,objc --prefix=/usr
--infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as
--with-gnu-ld --with-system-zlib --enable-long-long --enable-nls
--without-included-gettext --disable-checking --enable-threads=posix
--enable-java-gc=boehm --with-cpp-install-dir=bin --enable-objc-gc i386-linux
Thread model: posix
gcc version 3.0.4
 /usr/lib/gcc-lib/i386-linux/3.0.4/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=0
-D__GNUC_PATCHLEVEL__=4 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__
-D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__
-D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386
-D__i386__ -D__tune_i386__ minimal2.cc -D__GNUG__=3 -D__GXX_DEPRECATED
-D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase minimal2.cc -version -o
/tmp/cc4oFYdd.s
GNU CPP version 3.0.4 (cpplib) (i386 Linux/ELF)
GNU C++ version 3.0.4 (i386-linux)
        compiled by GNU C version 3.0.4.
ignoring nonexistent directory "/usr/i386-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/g++-v3
 /usr/include/g++-v3/i386-linux
 /usr/include/g++-v3/backward
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/3.0.4/include
 /usr/include
End of search list.
minimal2.cc:10: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.

Release:
g++ 3.04, g++ 2.95.4

Environment:
Debian unstable, linux kernel 2.4.18

How-To-Repeat:
Compile the attached test-program

Fix:
No idea

State-Changed-From-To: open->analyzed
State-Changed-Why: Confirmed.  Still present in trunk and 3.1 branch.

From: Reichelt <reichelt@igpm.rwth-aachen.de>
To: gcc-gnats@gcc.gnu.org, jototland@hotmail.com, gcc-bugs@gcc.gnu.org,
        nobody@gcc.gnu.org
Cc:  
Subject: Re: c++/6620: partial template specialization on int
Date: Mon, 13 May 2002 12:37:15 +0200

 Hi,
 
 on can reduce the testcase a little more:
 
 --------------------------snip here-------------------------------
 template <int N> struct HoldInt {};
 
 template <class A, class B> struct Add;
 
 template <int N, int M> struct Add< HoldInt<N>, HoldInt<M> > {};
 
 template <int N>        struct Add< HoldInt<N>, HoldInt<-N> > {};
 
 Add< HoldInt<1>, HoldInt<-1> > a;
 --------------------------snip here-------------------------------
 
 By the way, both testcases not only crash gcc but even SGI's native
 compiler, so they seem to be a real compiler-killers ;-)
 
 Greetings,
 Volker Reichelt
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6620
 
 

Responsible-Changed-From-To: unassigned->lerdsuwa
Responsible-Changed-Why: Patch submitted.

State-Changed-From-To: analyzed->closed
State-Changed-Why: Fixed in the main trunk.  It won't be fixed in 3.1 branch 
    as stability is the main focus there.