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