c++/4990: ice when using multiple non-class template parameters (works on 2.95.3)

[scott_k_macdonald at yahoo dot com]

>Number:         4990
>Category:       c++
>Synopsis:       ice when using multiple non-class template parameters (works on 2.95.3)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 03 09:16:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Scott MacDonald
>Release:        gcc-3.0.2
>Organization:
>Environment:
Red Hat Linux 7.1, Intel
>Description:
This problem is an extension of bug #3911. The code posted in that report compiles fine, but the addition of another operator causes an Internal error: Segmentation fault .

The code works fine using gcc 2.95.3 and using Comeau Computing's online compiler (4.2.45.2).

This was the result of a compile of test-1.cc (code below).
> g++ test-1.cc
test1.cc: In function `int main()':
test1.cc:28: 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.

As a side note I also posted this a while back but the version was a snapshot and not a full release.  That posting (#4377) seems to have been lost in the noise.  I reposted because I don't have access to modify a report and the end results are slightly different.

===================================================
code for test1.cc

template < int I1, int I2 >
class unit
{
public:
 unit() {}
 unit( const unit<I1,I2>& ) {}

 template< int Q1, int Q2 >
 unit< I1 + Q1, I2 + Q2 > operator * ( const unit< Q1, Q2 >& rhs ) const {
 return unit< I1 + Q1, I2 + Q2 >();
 }
 
 template< int Q1, int Q2 >
 unit< I1 - Q1, I2 - Q2 > operator / ( const unit< Q1, Q2 >& rhs ) const {
 return unit< I1 - Q1, I2 - Q2 >();
 }
 
};
 
int main()
{
 const unit<1,0> u1;
 const unit<2,0> u2;
 
 unit<-1,0> u3( u1 / u2 );
 unit< 3,0> u4( u1 * u2 );
}

>How-To-Repeat:
g++ test1.cc
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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Content-Type: text/x-c++src; name="test1.cc"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="test1.cc"

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