From 7f6cbbeff5a6ac623b9dacc686c04633d5691858 Mon Sep 17 00:00:00 2001 From: Stefano Lattarini Date: Tue, 24 Jul 2012 15:05:14 +0200 Subject: [PATCH] [ng] spy: iteration variables in "$(foreach ...)" loops are temporary * t/spy-foreach.sh: New test. Check that, after a "$(foreach x,...)" loop, the make variable $(x) is: - restored to the original variable it had before the 'foreach' loop, if it was already set; and - is re-unset otherwise. Signed-off-by: Stefano Lattarini --- t/spy-foreach.sh | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100755 t/spy-foreach.sh diff --git a/t/spy-foreach.sh b/t/spy-foreach.sh new file mode 100755 index 000000000..e71bd8124 --- /dev/null +++ b/t/spy-foreach.sh @@ -0,0 +1,39 @@ +#! /bin/sh +# Copyright (C) 2012 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +# Verify that iterating variable used in a $(foreach ...) builtin is +# only temporary, and restored to its previous variable if it was already +# set. + +am_create_testdir=empty +. ./defs || exit 1 + +cat > Makefile <<'END' +$(foreach x,1 2,$(warning foo-$(x))$(eval y:=$$(x))) +$(foreach u,oops ko,$(warning bar-$(u))$(eval v=$(u))) +test: + test .'$(x)' = . + test .'$(origin x)' = .'undefined' + test .'$(y)' = .2 + test .'$(v)' = .ko + test .'$(u)' = .ok + test .'$(origin u)' = .'command line' +END + +x= y= u= v=; unset x y u v +$MAKE test u=ok + +: -- 2.47.2