🚀 go-pugleaf

This is a GNU extension.  All versions (probably) can flag this as an
error.  Just ask it to, -ansi -pedantic to make it grip and moan about
everything under the sun.

> Date: Thu, 9 Apr 92 14:26:10 CDT
> From: dougm@cs.rice.edu (Doug Moore)
> Message-Id: <9204091926.AA03439@cs.rice.edu>
> To: bug-g++@prep.ai.mit.edu

> The following code:
> ====================
> class foo
> {
> public:
>   int a = 0;
> };

> foo baz;
> ====================
> not compile under Sun C++, with the error message:
> ====================
> CC  test.cc:
> "test.cc", line 2: error:  initializer for member a
> 1 error
> ====================

> Looking through my C++ reference books, I cannot find anything to
> indicate what the compiler should do with an attempt to initialize a
> class data member within the class definition.  Nor can I find a
> mention of this as a gnu extension in the documentation that
> accompanies gcc 2.1.  Yet both g++ 1.40.3 and g++ 2.1 accept such
> initializations without complaint.

> Since my students attempt such initializations all the time and,
> worse, sometimes the initializations achieve what the student
> intended, I'd appreciate it if an upcoming version of GNU C++ flagged
> this as an error.

> BTW: The failure to warn occurs under GNU GCC 2.1, w/ Tiemann inf.
> loop patches, and patches from Mike Stump for the Sabre detected bugs,
> running on a SUN sparc2 running Sunos 4.1.  The same behavior occurred
> under g++ 1.40.3.