c++/1561: pointer not initialised to 0

[Phil Edwards]

The following reply was made to PR c++/1561; it has been noted by GNATS.

From: Phil Edwards <pedwards@disaster.jaj.com>
To: david@davidpashley.com
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/1561: pointer not initialised to 0
Date: Fri, 5 Jan 2001 12:39:50 -0500

 On Fri, Jan 05, 2001 at 04:06:15PM -0000, david@davidpashley.com wrote:
 > >Description:
 > root% cat c.cc
 > #include <assert.h>
 > 
 >  int *a;
 > 
 >  int main
 >  ()
 >  {
 >      int *b;
 > 
 >      assert (a==0);
 >      assert (b==0);
 > 
 >      exit(0);
 >  }
 > 
 > root% g++ c.cc
 > root% ./a.out 
 > a.out: c.cc:11: int main(): Assertion `b==0' failed.
 > Aborted
 > root% 
 > 
 > I think both the assertions should pass
 
 The C++ standard disagrees with you.  :-)
 
 Local automatic ("stack") variables such as b are not initialized to
 anything.  You must assign a value before using them.
 
 
 Luck++;
 Phil
 
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