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diff --git a/dmake/tests/misc-20 b/dmake/tests/misc-20
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+#!/bin/sh
+
+# 16.09.2007 Volker Quetschke
+# Check that inferred makefiles for .INCLUDE do not disturb the dependency
+# checking afterwards.
+# (issue 81296)
+
+: ${DMAKEPROG:=dmake}
+file1="mfile1.mk"
+file2="my.c"
+file3="my.obj"
+file4="my.foo"
+tmpfiles="$file1 $file2 $file3 $file4"
+
+trap '{ echo "trapped signal - removing temporary files" ; rm -rf $tmpfiles ; }' 1 2 3 15
+
+# Remove files from prior failed run
+rm -rf $tmpfiles
+
+# Remember to quote variables in generated makefiles( $ -> \$ ).
+# Test 1 - from testcase t_81296_5.mk
+cat > $file1 <<EOT
+SHELL*:=/bin/sh
+SHELLFLAGS*:=-ce
+
+# Test that my.c is build when my.foo is newer.
+
+# rules.mk ---
+%.obj : %.c ;  @+printf "\$@:"
+#	@sleep 1
+	@touch \$@
+
+%.dpo : %.c ; @+printf "incbuild:\$@:"
+#	@sleep 1
+
+# target.mk ---
+all : my.obj ; @echo all
+
+# If the file exist no inference is done for it.
+.INCLUDE .IGNORE : my.dpo
+
+# When inference was run on the %.dpo with an existing
+# %.c these rule gets ignored.
+# local makefile.mk ---
+%.c : %.foo ; @+printf "\$@:"
+#	@sleep 1
+	@touch \$@
+EOT
+
+# Create test environment
+touch my.c
+sleep 1
+touch my.foo
+
+output1=`eval ${DMAKEPROG} -rf $file1 2>&1 `
+result1=$?
+
+if test $result1 = 0 -a "$output1" = "incbuild:my.dpo:my.c:my.obj:all"; then
+  echo "Subtest 1: OK"
+else
+  echo "Subtest 1: Wrong result: $output1"
+  echo
+  result1=1
+fi 
+
+# Remove files from prior run
+rm -rf $tmpfiles
+# Remember to quote variables in generated makefiles( $ -> \$ ).
+# Test 2 - from testcase t_81296_6.mk
+cat > $file1 <<EOT
+SHELL*:=/bin/sh
+SHELLFLAGS*:=-ce
+
+# Test that no circular dependency error is issued:
+# $ rm -f my.* ; touch my.c ; ./dmake/dmake.exe -rf t_81296_6.mk
+
+# rules.mk ---
+%.obj : %.c ;  @+printf "\$@:"
+	@touch \$@
+
+%.dpo : %.c ; @+printf "incbuild:\$@:"
+
+# target.mk ---
+all : my.obj ; @echo all
+
+# If the file exist no inference is done for it.
+.INCLUDE .IGNORE : my.dpo
+
+%.c : %.foo ; @+printf "\$@:"
+	@touch \$@
+
+# This leads to a (wrong) circular dependency error
+my.obj : my.c
+
+EOT
+
+# Create test environment
+touch my.c
+sleep 1
+touch my.foo
+
+output2=`eval ${DMAKEPROG} -rf $file1 2>&1 `
+result2=$?
+
+if test $result2 = 0 -a "$output2" = "incbuild:my.dpo:my.c:my.obj:all"; then
+  echo "Subtest 2: OK"
+else
+  echo "Subtest 2: Wrong result: $output2"
+  echo
+  result2=1
+fi 
+
+
+if test $result1 -eq 0 -a $result2 -eq 0 ; then
+  echo "Success - Cleaning up"
+  rm -rf $tmpfiles
+  exit
+else
+  echo "Failure!"
+  exit 1
+fi