c++/9727: [3.3 regression] ICE in pushclass() with template and conversion operator

[bangerth@ticam.utexas.edu]

>Number:         9727
>Category:       c++
>Synopsis:       [3.3 regression] ICE in pushclass() with template and conversion operator
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Feb 17 16:16:01 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     Wolfgang Bangerth
>Release:        unknown-1.0
>Organization:
>Environment:
3.3 branch
>Description:
This ICEs on the 3.3 branch, but not with 3.2.2 or present
mainline:
-----------------------------
template <class T> struct X {
    typedef int type;
};

template <class T> struct O {
    struct I {
        operator typename X<T>::type ();
    };
};

template <class T>
O<T>::I::operator typename X<T>::type () {}
------------------------------------------

g/x> /home/bangerth/bin/gcc-3.3-pre/bin/c++ -c y.cc
y.cc:12: internal compiler error: Segmentation fault
Please submit a full bug report,

I double checked: this doesn't happen with mainline
snapshots from 2002-12-05 and -19, so I guess this
must be a regression that was introduced on the branch.
Too bad :-(

A backtrace of this is as here:
#0  0x08080896 in pushclass (type=0x4018d8c0, modify=2)
    at ../../gcc-3.3-CVS/gcc/cp/class.c:5657
#1  0x0808917f in push_scope (t=0x0) at ../../gcc-3.3-CVS/gcc/cp/decl2.c:4038
#2  0x080855e9 in grokoptypename (declspecs=0x0, declarator=0x0, 
    scope=0x4018d8c0) at ../../gcc-3.3-CVS/gcc/cp/decl2.c:1145
#3  0x08096b74 in yyparse () at parse.y:3992
#4  0x080d26b9 in c_common_parse_file (set_yydebug=0)
    at ../../gcc-3.3-CVS/gcc/c-lex.c:159

W.
>How-To-Repeat:

>Fix:

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