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* tests/tools.m4 (Syntax of the scripts): Be robust to shells that

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never return on some `/bin/sh -n foo.sh'.
Reported by Nicolas Joly.
This commit is contained in:
Akim Demaille 2000-02-18 09:25:46 +00:00
parent 28f9bc5c0d
commit 0cf60eb2d2
3 changed files with 43 additions and 5 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2000-02-18 Akim Demaille <akim@epita.fr>
* tests/tools.m4 (Syntax of the scripts): Be robust to shells that
never return on some `/bin/sh -n foo.sh'.
Reported by Nicolas Joly.
2000-02-17 Akim Demaille <akim@epita.fr>
Move the documentation into doc/.

1
THANKS
View File

@ -43,6 +43,7 @@ Markku Savela msa@msa.tte.vtt.fi
Matthew D. Langston langston@SLAC.Stanford.EDU
Mike Stump mrs@wrs.com
Miles Bader miles@gnu.ai.mit.edu
Nicolas Joly njoly@pasteur.fr
Noah Friedman friedman@gnu.ai.mit.edu
Paul Eggert eggert@twinsun.com
Pavel Roskin pavel_roskin@geocities.com

41
tests/tools.m4
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@ -11,16 +11,47 @@ EOF
## Check that the shell scripts are syntactically correct. ##
## -------------------------------------------------------- ##
# We use `/bin/sh -n script' to check that there are no syntax errors
# in the scripts. Although incredible, there are /bin/sh that go into
# endless loops with `-n', e.g., SunOS's:
#
# $ uname -a
# SunOS ondine 4.1.3 2 sun4m unknown
# $ cat endless.sh
# while false
# do
# :
# done
# exit 0
# $ time sh endless.sh
# sh endless.sh 0,02s user 0,03s system 78% cpu 0,064 total
# $ time sh -nx endless.sh
# ^Csh -nx endless.sh 3,67s user 0,03s system 63% cpu 5,868 total
#
# So before using `/bin/sh -n' to check our scripts, we first check
# that `/bin/sh -n' is not broken to death.
AT_SETUP(Syntax of the scripts)
AT_DATA(true,
[[#! /bin/sh
exit 0
# A script that never returns. We don't care that it never returns,
# broken /bin/sh loop equally with `false', but it makes it easier to
# test the robusteness in a good environment: just remove the `-n'.
AT_DATA(endless.sh,
[[while true
do
:
done
]])
chmod +x true
# A script in charge of testing `/bin/sh -n'.
AT_DATA(syntax.sh,
[[set -e
(/bin/sh -n endless.sh) &
cpid=$!
sleep 2 && kill $cpid >/dev/null 2>&1
]])
if (/bin/sh -n ./true) >/dev/null 2>&1; then
if /bin/sh ./syntax.sh; then
AT_CHECK([/bin/sh -n ../autoconf], 0)
AT_CHECK([/bin/sh -n ../autoreconf], 0)
AT_CHECK([/bin/sh -n ../autoupdate], 0)