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* doc/autoconf.texi (Limitations of Usual Tools) <awk>: `for' on

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arrays is nondeterministic across AWK implementations.
* tests/tools.at (autoconf: forbidden tokens): Sort the error
message to guarantee its uniqueness.
This commit is contained in:
Akim Demaille 2000-12-06 15:00:45 +00:00
parent 9eb6e4e204
commit 89b05bc4aa
3 changed files with 41 additions and 10 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2000-12-06 Akim Demaille <akim@epita.fr>
* doc/autoconf.texi (Limitations of Usual Tools) <awk>: `for' on
arrays is nondeterministic across AWK implementations.
* tests/tools.at (autoconf: forbidden tokens): Sort the error
message to guarantee its uniqueness.
2000-12-06 Akim Demaille <akim@epita.fr>
The SunOS' egrep fails to process properly the `egrep' invocations

19
doc/autoconf.texi
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@ -5920,6 +5920,25 @@ $ gawk 'function die () @{ print "Aaaaarg!" @}
Aaaaarg!
@end example
If you want your program to be deterministic, don't depend on @code{for}
on arrays:
@example
$ cat for.awk
END @{
arr["foo"] = 1
arr["bar"] = 1
for (i in arr)
print i
@}
$ gawk -f for.awk </dev/null
foo
bar
$ nawk -f for.awk </dev/null
bar
foo
@end example
@item @command{cat}
@c ----------------

25
tests/tools.at
View File

@ -186,16 +186,18 @@ AT_CLEANUP
## ------------------ ##
## Forbidden tokens. ##
## ------------------ ##
## ---------------------------- ##
## autoconf: forbidden tokens. ##
## ---------------------------- ##
AT_SETUP([Forbidden tokens])
AT_SETUP([autoconf: forbidden tokens])
AT_DATA([configure.in],
[[AC_PLAIN_SCRIPT()dnl
# This is allowed in spite of the name.
# It is on purpose that we check the case where there are several
# tokens on the same line.
m4_pattern_allow([^AC_ALLOWED$])
NOT_AC_ALLOWED AC_ALLOWED AC_ALLOWED_NOT
@ -212,17 +214,20 @@ BAC_DEFINE
It would be very bad if Autoconf forgot to expand [AC_]OUTPUT!
]])
AT_CHECK([autoconf --autoconf-dir .. -l $at_srcdir], 1, [],
[[configure.in:5: error: undefined macro: NOT_AC_ALLOWED
configure.in:5: error: undefined macro: AC_ALLOWED_NOT
configure.in:8: error: undefined macro: FORBIDDEN
configure.in:12: error: undefined macro: AC_THIS_IS_INVALID
AT_CHECK([autoconf --autoconf-dir .. -l $at_srcdir 2>err], 1)
# The output of autoconf is not deterministic here because it
# uses `for (ind in array)'. So be sure to have a unique representation.
AT_CHECK([sort <err], 0,
[[configure.in:12: error: undefined macro: AC_THIS_IS_INVALID
configure.in:12: error: undefined macro: AZ_THIS_IS_INVALID_TOO
configure.in:13: error: undefined macro: ALTHOUGH_AC_THIS_IS
configure.in:5: error: undefined macro: AC_ALLOWED_NOT
configure.in:5: error: undefined macro: NOT_AC_ALLOWED
configure.in:8: error: undefined macro: FORBIDDEN
configure:16: error: undefined macro: AC_OUTPUT
]])
AT_CLEANUP(configure)
AT_CLEANUP(configure err)