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List:       glibc-alpha
Subject:    Re: Fix HEAD build on amd64
From:       Daniel Jacobowitz <drow () false ! org>
Date:       2006-02-24 22:14:38
Message-ID: 20060224221438.GA6050 () nevyn ! them ! org
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On Fri, Feb 24, 2006 at 02:09:13PM -0800, Roland McGrath wrote:
> > On Fri, Feb 24, 2006 at 01:37:30PM -0800, Roland McGrath wrote:
> > > Why shouldn't .eh_frame always be read-only?
> > 
> > It depends on the encoding selected by GCC.  The code in dwarf2out.c
> > suggests that there is at least one architecture, somewhere, which
> > uses DW_EH_PE_absptr or DW_EH_PE_aligned even for PIC code, and various
> > linker versions where it must conservatively be writable.
> 
> This is just for our own .so builds in libc, and none of them need that.
> What's not clear to me yet is if there are GCC configurations that will
> barf at compile/link time on a read-only .eh_frame section.  If so, we'll
> go with your configure check I guess.  If not, it can just always be const.

With current vintage binutils, always const is probably fine.

-- 
Daniel Jacobowitz
CodeSourcery
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