Here's the patch I installed to gnulib, to sync it from the
mktime patch in Autoconf.
2006-12-22 Paul Eggert <[EMAIL PROTECTED]>
* m4/mktime.m4 (AC_FUNC_MKTIME): Sync from Autoconf.
Include , and use its INT_MAX to rewrite the
j loop so that it does not overflow 'int'.
I installed the following into Autoconf to fix the Autoconf side of
the problem.
2006-12-22 Paul Eggert <[EMAIL PROTECTED]>
* lib/autoconf/functions.m4 (AC_FUNC_MKTIME):
Include , and use its INT_MAX to rewrite the
j loop so that it does not overflow 'int'. Problem repo
On 2006-12-20, at 00:10, Richard B. Kreckel wrote:
C89 did not refer to IEEE 754 / IEC 60559. Yet, as far as I am aware,
-ffast-math or the implied optimizations have never been turned on
by GCC
unless explicitly requested. That was a wise decision.
By the same token it would be wise to re
On Mon, 18 Dec 2006, Andrew Pinski wrote:
> On Tue, [EMAIL PROTECTED]:54 +0100, Ralf Wildenhues wrote:
> > > Wheeeoo! That optimization is going to break a _lot_ of GNU
> > > software. (Silently. Oh my.)
>
> Just like say strict aliasing? :)
I find an analogy with -ffast-math much less far-fetc
On Tue, 2006-12-19 at 06:54 +0100, Ralf Wildenhues wrote:
> > Wheeeoo! That optimization is going to break a _lot_ of GNU
> > software. (Silently. Oh my.)
Just like say strict aliasing? :)
> > We tried to do that sort of optimization in the 1990s (back when I
> > was a GCC contributor), but r
[ Please see http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/8152
http://www.ginac.de/pipermail/cln-list/2006-December/000259.html ]
Hello Paul, all,
Let's forward your comments and questions to the GCC list, I wasn't
aware of this topic being so disruptive:
* Paul Eggert wrote on Tue, Dec
Ralf Wildenhues <[EMAIL PROTECTED]> writes:
> the newer GCC exploits at -O2 the fact that integer overflow
> produces undefined behavior
Wheeeoo! That optimization is going to break a _lot_ of GNU
software. (Silently. Oh my.)
This is a major change. Where is it documented and discussed? I
d
$ gcc-4.3 --version
| gcc (GCC) 4.3.0 20061215 (experimental)
$ gnulib-tool --with-tests --test
[ interrupt at a convenient location ]
$ .../configure CC=gcc-test
[...]
| checking for working mktime...
This test hangs, because the newer GCC exploits at -O2 the fact that
integer overflow produces u
