c++/7202: function arg of "int X(0)" causes seg fault in compiler

[geb@attbi.com]

>Number:         7202
>Category:       c++
>Synopsis:       function arg of "int X(0)" causes seg fault in compiler
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          ice-on-legal-code
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 03 13:26:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Gary Barnes
>Release:        3.0.1
>Organization:
none
>Environment:
System: Linux smbear.attbi.com 2.4.3-20mdk #1 Sun Apr 15 23:03:10 CEST 2001 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ./configure --prefix=/usr/local
>Description:
Using g++ command, immediate internal error, segmentation fault.
Appears to be due to use of constructor for default value of function argument.
>How-To-Repeat:
This command line:

g++ -c foo.cc -o foo.o -g  -MMD -frepo -ansi -pedantic -fshort-enums -W -Wall \
-Wundef -Wshadow -Wpointer_arith -Wbad-function-cast -Wcast-qual -Wcast-align \
-Wwrite-strings -Wconversion -Wsign-compare -Wredundant-decls \
-Wunreachable-code -Wmissing-declarations -Winline -fmessage-length=99999 \
-Werror

This is the source code in foo.cc:

template <class Arg>
class One {
public:
    virtual int Func (int X (0));
};

template <class Arg>
int One <Arg>::Func (int X (0)) {
    return 1;
}


>Fix:
Use
    int X = int (0) 
instead.  I discovered this using a more complicated type of course, one that
had a nontrivial constructor, but the bug shows with int.


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