Re: [PATCH] Don't install libio.h or _G_config.h

[Florian Weimer <fweimer at redhat dot com>]

On 02/05/2018 03:29 PM, Zack Weinberg wrote:
> On Mon, Feb 5, 2018 at 9:18 AM, Joseph Myers <joseph@codesourcery.com> wrote:
> > Is this a patch that you would expect not to result in any changes to
> > installed stripped shared libraries
>
> No, however there are only two fundamental changes.  Line numbers
> change in vfprintf.c assertions, which is easy enough to ignore when
> reading disassembly diffs.

It's possible to put -DNDEBUG into CFLAGS to eliminate these differences 
(well, most of them).

> More troublesome,  ancillary programs and
> libraries that call getc or putc will now reference getc@GLIBC_2.0 /
> putc@GLIBC_2.0 instead of _IO_getc@GLIBC_2.0 / _IO_putc@GLIBC_2.0.
> This causes a bunch of sections, including .text, to shift their
> starting address slightly (I think because .dynsym is shorter), which
> makes `objdump -d` output not easily diffable, but I *think* code
> generation is not affected.

Maybe it's possible to add something to include/stdio.h to redirect the 
references, so that the results are the same, and revert that in a 
subsequent commit?

Thanks,
Florian