Re: Default constructor error

From:
Victor Bazarov <v.bazarov@comcast.invalid>
Newsgroups:
comp.lang.c++
Date:
Thu, 19 May 2011 13:46:57 -0400
Message-ID:
<ir3l2i$r9d$1@dont-email.me>
On 5/19/2011 1:14 PM, Ruben Safir wrote:

I'm getting this warning that appears in the 4.6 GCC compiler that didn't
happen before.

the warning is

/home/ruben/cplus/link_list_template_mysql/stats.h|45 col 42| warning:
converting to non-pointer type ???int??? from NULL [-Wconversion-null]

if comes from a default constructor

     Distribution():freq(NULL), occurances(0){};

occurances is an int type, and the compiler is complaining about
occurances(0)

it goes away when I change it to

Distribution():freq(NULL){
    occurances = 0;
};

but then it complains about freq which is of type T in a template


Given some extrapolation in lieu of the information you didn't provide
(like the definition of the 'Distribution' class), it seems that the
compiler is just buggy. Have you tried a different version of the same
compiler, with the same -Wconversion-null option?

Take your code to the Comeau online compiler interface
(http://www.comeaucomputing.com/tryitout) and see if it compiles it
cleanly. Then, if the code is OK, file a bug report against GCC.

V
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