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Re: bug in autoconf-2.64

From: Peter O'Gorman
Subject: Re: bug in autoconf-2.64
Date: Tue, 22 Feb 2011 21:50:32 -0600
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv: Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc13 Thunderbird/3.1.7

On 02/22/2011 04:04 PM, Eric Blake wrote:
[adding bug-m4]

On 02/22/2011 01:38 PM, Mike Stump wrote:
On Feb 22, 2011, at 11:00 AM, Eric Blake wrote:
Hmm, can you point to a URL of the web archive of that thread, to see if
I can glean anything from that discussion?


According to http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01474.html,
this might be a bug in m4 rather than in autoconf.

Unfortunately, I don't see anything obvious in m4's NEWS that would
explain such a difference between 1.4.13 and 1.4.15.

If the problem is reliably caused by the version of m4, then can you do
a git bisect on m4 sources to pinpoint a particular m4 revision where
the problem first appears?

Unless I did it wrong (entirely possible) -
76d1c49b8056aaf3f1046ba19c6dea6eb6aecb78 is the first bad commit -
Author: Eric Blake <address@hidden>
Date:   Thu Jul 29 07:25:33 2010 -0600

    Update to newer gnulib.

    * gnulib: Update to latest, for strtod fix.
    * src/Makefile.am (m4_LDADD): Update link libraries accordingly.
    * cfg.mk (local-checks-to-skip): Skip broken check.
    * doc/m4.texinfo: Drop all use of @acronym{}.
    * THANKS: Update.
    Reported by Rainer Tammer.


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