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Re: autoconf 2.61a: spurious testsuite failure

From: Stepan Kasal
Subject: Re: autoconf 2.61a: spurious testsuite failure
Date: Wed, 28 Mar 2007 17:41:35 +0200
User-agent: Mutt/


On Wed, Mar 28, 2007 at 12:52:29PM +0200, Andreas Schwab wrote:
> The test of AC_PROG_SED can lead to a spurious testsuite failure:
> +./configure: line 1682: echo: write error: Broken pipe

that line says:

echo "$ac_script" | sed 99q >conftest.sed

The bug seems to be fixed in the current development version, as it
is changed to

echo "$ac_script" 2>/dev/null | sed 99q >conftest.sed

The relates changelog entry is:

2007-01-11  Ralf Wildenhues  <address@hidden>

        * lib/autoconf/programs.m4 (AC_PROG_SED): When closing a pipe
        early on the reader side, drop stderr of the input to avoid
        `broken pipe' error output; this may happen even with shell
        builtin `echo' of some bash versions.  Reports by Ian Macdonald
        <address@hidden> and Sam Sexton <address@hidden>.

BTW, could the same have been achieved by the following?

     sed 99q >conftest.sed <<_ACEOF

Have a nice day,
        Stepan Kasal

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