Decouple mod158 from mod157 so it works in CLEANUP mode

testsuite/tests/ghc-regress/module/Makefile

@@ -12,3 +12,13 @@ mod146::
 	@$(TEST_HC) -c Mod145_A.hs
 	@$(TEST_HC) mod146.hs
 
+mod158::
+	rm -f Mod157_*.o
+	rm -f Mod157_*.hi
+	rm -f mod158.o mod158.hi mod158
+	$(TEST_HC) -c Mod157_A.hs
+	$(TEST_HC) -c Mod157_B.hs
+	$(TEST_HC) -c Mod157_C.hs
+	$(TEST_HC) -c Mod157_D.hs
+	$(TEST_HC) mod158.hs -o mod158
+

testsuite/tests/ghc-regress/module/all.T

@@ -206,7 +206,9 @@ test('mod156', normal, compile, [''])
 test('mod157', normal, multimod_compile, ['mod157', '-v0'])
 clean(['Mod157_A.hi', 'Mod157_A.o', 'Mod157_B.hi', 'Mod157_B.o',
        'Mod157_C.hi', 'Mod157_C.o', 'Mod157_D.hi', 'Mod157_D.o'])
-test('mod158', normal, compile_fail, [''])
+test('mod158', compose(normal, exit_code(2)), run_command, ['$MAKE -s --no-print-directory mod158'])
+clean(['Mod157_A.hi', 'Mod157_A.o', 'Mod157_B.hi', 'Mod157_B.o',
+       'Mod157_C.hi', 'Mod157_C.o', 'Mod157_D.hi', 'Mod157_D.o'])
 test('mod159', normal, multimod_compile, ['mod159', '-v0'])
 clean(['Mod159_A.hi', 'Mod159_A.o', 'Mod159_B.hi', 'Mod159_B.o',
        'Mod159_C.hi', 'Mod159_C.o', 'Mod159_D.hi', 'Mod159_D.o'])

testsuite/tests/ghc-regress/module/mod158.stderr

 
 mod158.hs:12:4: Not in scope: data constructor `C'
+make[1]: *** [mod158] Error 1