c++/1742: bug in gcc 2.95.2 on SunOS 5.6 due to too big function name

[dants@cs.huji.ac.il]

>Number:         1742
>Category:       c++
>Synopsis:       bug in gcc 2.95.2 on SunOS 5.6 due to too big function name
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          rejects-legal
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 23 04:56:00 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Dan Tsafrir
>Release:        gcc version 2.95.2 19991024 (release)
>Organization:
>Environment:
uname -a: SunOS sol2 5.6 Generic sun4u sparc SUNW,Ultra-2
>Description:
Release (g++ -v):
================
	Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/2.95.2/specs
	gcc version 2.95.2 19991024 (release)

Environment (uname -a):
======================
	SunOS sol2 5.6 Generic sun4u sparc SUNW,Ultra-2

Description:
===========
When compiling the C++ program:

	#include <map>
	#include <set>
	#include <utility>		// for pair

	struct X234567 {
	  int x;
	  X234567(int a=0) : x(a) {}
	  bool operator<(const X234567& b) const {return x < b.x;}
	};

	int main() {  
	  map< pair<int,int> , set<X234567> > m ;
	  m[make_pair(0,0)] = set<X234567>();
	  m.erase(make_pair(0,0));
	  return 0;
	}

I get the following error message:
	/usr/ccs/bin/as: "/var/tmp/ccdJu1ej.s", line 3062: 
	error: can't compute value of an expression involving an external symbol

But when I change the name of struct 'X234567' to 'X23456' (simply removed
the '7'), the compilation succeeds !
I guess the bug happens due to the symbol generated from: m.erase(...) (by
remarking this line, the bug disappears).

The compilation command is:
	g++ -Wall name-too-big-bug.cc -Istl -D_STL_NO_CONCEPT_CHECKS

The STL I used:
==============
I used SGI's latest version of STL (stdlib_20000608.tar.gz), 
found at:
	http://www.sgi.com/Technology/STL/standard_library.html
I opened the stl tar file in the directory: ./stl
and hence the compilation flag: -Istl


Thanks, Dan (dants@cs.huji.ac.il).
>How-To-Repeat:
described in 'Description'
>Fix:

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