[Bug bootstrap/50237] [4.7 regression] comparison failure caused by HAVE_INITFINI_ARRAY check

["joseph at codesourcery dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50237

--- Comment #14 from joseph at codesourcery dot com <joseph at codesourcery dot com> 2011-08-31 15:46:46 UTC ---
On Wed, 31 Aug 2011, hjl.tools at gmail dot com wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50237
> 
> --- Comment #13 from H.J. Lu <hjl.tools at gmail dot com> 2011-08-31 15:44:02 UTC ---
> (In reply to comment #12)
> > 
> > Arrange for the contents to have appropriate text values you can check for 
> > with grep (or if you wish a custom C program to run on the build system to 
> > examine ELF structures - only ELF needs to be considered for this, after 
> > all, and I think at this point you may even be able to rely on having 
> > libiberty already built for the build system, complete with the 
> > simple-object-elf code).
> 
> .init_array section is an array of pointers. How do you grep it?

You arrange for the pointers to be assigned values whose bytes happen to 
correspond to text (endian-independent text, ideally).  Just like using 
grep to determine target endianness or floating point format.