gcc/contrib/git-undescr.sh
Jakub Jelinek ff060ef08c contrib: Fix up git-descr.sh regression [PR102664]
On Wed, Mar 09, 2022 at 12:40:24PM -0500, Patrick Palka via Gcc-patches wrote:
> On Wed, Mar 9, 2022 at 8:54 AM Mikael Morin <morin-mikael@orange.fr> wrote:
> > Le 08/03/2022 à 18:58, Jonathan Wakely via Gcc-patches a écrit :
> > > Replace \([0-9]\+\) with \([0-9][0-9]*\) or with \([1-9][0-9]*\) in release branch numbers, where
> > > a leading zero does not occur.
> > >
> > Note that you also changed some gcc-[0-9]* to gcc-[1-9]*, which is a
> > typo/thinko I guess?  It looks like it wouldn’t match gcc-10 any more
> > for example…
>
> Perhaps related to this, I noticed the following
>   git gcc-descr ea1ce0d163
> now fails with
>   fatal: No tags can describe 'ea1ce0d163ea1d63b6837144ae4be51d92630007'.
> instead of outputting
>   r0-52309-gea1ce0d163ea1d

That is because of those [0-9] to [1-9] changes which prevent
basepoints/gcc-0 from working.  While basepoints/gcc-005 etc. are certainly
unexpected, basepoints/gcc-0 needs to work.

2022-03-10  Jakub Jelinek  <jakub@redhat.com>

	PR other/102664
	* git-descr.sh: Replace all [1-9] occurrences with [0-9].
	* git-undescr.sh: Likewise.
2022-03-10 09:42:03 +01:00

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#!/bin/sh
# Script to undescribe a GCC revision
o=$(git config --get gcc-config.upstream);
r=$(echo $1 | sed -n 's,^r\([0-9][0-9]*\)-[0-9][0-9]*\(-g[0-9a-f]*\)*$,\1,p');
n=$(echo $1 | sed -n 's,^r[0-9][0-9]*-\([0-9][0-9]*\)\(-g[0-9a-f]*\)*$,\1,p');
test -z $r && echo Invalid id $1 && exit 1;
h=$(git rev-parse --verify --quiet ${o:-origin}/releases/gcc-$r);
test -z $h && h=$(git rev-parse --verify --quiet ${o:-origin}/master);
p=$(git describe --all --match 'basepoints/gcc-'$r $h | sed -n 's,^tags/,,;s,^basepoints/gcc-[0-9][0-9]*-\([0-9][0-9]*\)-g[0-9a-f]*$,\1,p;s,^basepoints/gcc-[0-9][0-9]*$,0,p');
git rev-parse --verify $h~$(expr $p - $n);