[jbglaw@lug-owl.de: Re: r214024 - in /trunk/gcc: ChangeLog c-family/Cha...]

[Jan-Benedict Glaw]

On Sat, 2014-08-16 17:10:12 +0200, Manuel López-Ibáñez <lopezibanez@gmail.com> wrote:
> On 16 August 2014 16:56, Jan-Benedict Glaw <jbglaw@lug-owl.de> wrote:
> > There's --enable-werror-always, though that didn't trigger before (et
> > least not for the printf'ish checks.) So what's specifically different
> > with this new function?
> 
> Sorry, I don't find that option here: https://gcc.gnu.org/install/configure.html
> so I'm not sure what it does.

The .ac fragment is:

,---------------------------------------------
| # Enable -Werror in bootstrap stage2 and later.
| AC_ARG_ENABLE(werror,
| [AS_HELP_STRING([--enable-werror],
|                 [enable -Werror in bootstrap stage2 and later])], [],
| [if test -d ${srcdir}/gcc && test x"`cat $srcdir/gcc/DEV-PHASE`" = xexperimental; then
|   enable_werror=yes
| else
|   enable_werror=no
| fi])
| case ${enable_werror} in
|   yes) stage2_werror_flag="--enable-werror-always" ;;
|   *) stage2_werror_flag="" ;;
| esac
| AC_SUBST(stage2_werror_flag)
`---------------------------------------------

This was added on Wed Mar 24 22:08:39 2004 +0000. The `config-list.mk'
file uses it since it was added to GCC on Thu May 5 01:47:47 2011 +0000.

> But if the compiler using -Werror is an earlier revision as the one
> that modified c-format.c, it should not use -Werror because it will
> produce Wformat errors. Is this the case here?

Not sure:

gcc20: g++ (Debian 4.4.5-8) 4.4.5
gcc76: g++ (Debian 4.4.5-8) 4.4.5
pluto: g++ (Debian 4.9.1-1) 4.9.1

However, the "pluto" box also fails, and it's GCC is about up-to-date.

MfG, JBG

-- 
      Jan-Benedict Glaw      jbglaw@lug-owl.de              +49-172-7608481
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