Re: c/7464: weak symbols alias definitions are broken in 3.1.1 (weak alias regression from 2.95)

[Wolfgang Bangerth <bangerth@ticam.utexas.edu>]

The following reply was made to PR c/7464; it has been noted by GNATS.

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: gcc@gcc.gnu.org, <gcc-gnats@gcc.gnu.org>
Cc:  
Subject: Re: c/7464: weak symbols alias definitions are broken in 3.1.1 (weak
 alias regression from 2.95)
Date: Fri, 25 Oct 2002 09:08:25 -0500 (CDT)

 This is one more regression from 2.95 with respect to weak and alias 
 attributes:
 --------------------------------------------------
 extern int i __attribute__ ((alias ("__i")));
 extern int i __attribute__ ((weak, alias ("__i")));
 --------------------------------------------------
 
 In contrast to c++/6074, which is similar but treats functions instead of 
 variables, this is broken in both C and C++, and is also not fixed on 
 mainline.
 
 The messages I get are:
 from C:
     x.c:2: error: weak declaration of `i' must precede definition
 from C++:
     x.cc:2: error: redefinition of `int i'
     x.cc:1: error: `int i' previously declared here
 
 As said, gcc2.95 accepts this.
 
 Regards
   Wolfgang
 
 -------------------------------------------------------------------------
 Wolfgang Bangerth              email:           bangerth@ticam.utexas.edu
                                www: http://www.ticam.utexas.edu/~bangerth