1 files changed, 74 insertions, 0 deletions
diff --git a/test/Parallel/duplicate-target.py b/test/Parallel/duplicate-target.py
new file mode 100644
index 0000000..5d4f5e1
--- /dev/null
+++ b/test/Parallel/duplicate-target.py
@@ -0,0 +1,74 @@
+#!/usr/bin/env python
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+"""
+Verify that, when a file is specified multiple times in a target
+list, we still build all of the necessary targets.
+
+This used to cause a target to "disappear" from the DAG when its reference
+count dropped below 0, because we were subtracting the duplicated target
+mutiple times even though we'd only visit it once.  This was particularly
+hard to track down because the DAG itself (when printed with --tree=prune,
+for example) doesn't show the duplication in the *target* list.
+"""
+
+import TestSCons
+
+_python_ = TestSCons._python_
+
+test = TestSCons.TestSCons()
+
+test.subdir('work')
+
+tar_output = test.workpath('work.tar')
+
+test.write(['work', 'copy.py'], """\
+import sys
+import time
+time.sleep(int(sys.argv[1]))
+open(sys.argv[2], 'wb').write(open(sys.argv[3], 'rb').read())
+""")
+
+test.write(['work', 'SConstruct'], """\
+env = Environment()
+out1 = File('f1.out')
+out2 = File('f2.out')
+env.Command([out1, out1], 'f1.in', r'%(_python_)s copy.py 3 $TARGET $SOURCE')
+env.Command([out2, out2], 'f2.in', r'%(_python_)s copy.py 3 $TARGET $SOURCE')
+
+env.Tar(r'%(tar_output)s', Dir('.'))
+""" % locals())
+
+test.write(['work', 'f1.in'], "work/f1.in\n")
+test.write(['work', 'f2.in'], "work/f2.in\n")
+
+test.run(chdir = 'work', arguments = tar_output + ' -j2')
+
+test.must_match(['work', 'f1.out'], "work/f1.in\n")
+test.must_match(['work', 'f2.out'], "work/f2.in\n")
+test.must_exist(tar_output)
+
+test.pass_test()