c++/10541: Is NULL a valid pointer-type template argument?

[Wolfgang Bangerth]

The following reply was made to PR c++/10541; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ices.utexas.edu>
To: Gianni Mariani <gianni@mariani.ws>
Cc: gcc-bugs@gcc.gnu.org, <gcc-gnats@gcc.gnu.org>
Subject: Re: c++/10541: Is NULL a valid pointer-type template argument?
Date: Tue, 29 Apr 2003 12:22:51 -0500 (CDT)

 > I remember reading a while back that C/C++ considers the value 0 to be a 
 > valid value for any pointer type.  Hence 0 CAN BE of type char *.
 
 Well, 0 is of type "signed int". It can be converted to any pointer type 
 implicitly. The question is whether the compiler is supposed to do 
 implicit conversions for template args. I don't think so.
 
 > Other compilers seem to take this value.
 
 icc doesn't, for example.
 
 W.
 
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 Wolfgang Bangerth              email:            bangerth@ices.utexas.edu
                                www: http://www.ices.utexas.edu/~bangerth/