FIX #1840: outofmem and outofmem2 need ulimit settings to avoid filling up swap

testsuite/tests/ghc-regress/rts/Makefile

 TOP=../../..
 include $(TOP)/mk/boilerplate.mk
 include $(TOP)/mk/test.mk
+
+outofmem-prep::
+	$(TEST_HC) --make -fforce-recomp outofmem.hs -o outofmem
+
+outofmem::
+	@$(MAKE) outofmem-prep >prep.out 2>prep.out
+	@ulimit -v 100000 2>/dev/null; ./outofmem || echo "exit($$?)"
+
+outofmem2-prep::
+	$(TEST_HC) --make -fforce-recomp outofmem2.hs -o outofmem2
+
+outofmem2::
+	@$(MAKE) outofmem2-prep >prep.out 2>prep.out
+	@ulimit -v 100000 2>/dev/null; ./outofmem2 +RTS -M5m -RTS || echo "exit($$?)"

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

@@ -21,8 +21,7 @@ test('divbyzero',
              exit_code_if_platform(1, 'i386-unknown-mingw32')),
      compile_and_run, [''])
 
-test('outofmem', exit_code(1), compile_and_run, [''])
-test('outofmem2', composes([exit_code(251),
-                            expect_fail_if_compiler_lt('ghc','6.9'),
-                            extra_run_opts('+RTS -M5m -RTS')]),
-                  compile_and_run, [''])
+test('outofmem', normal, run_command, ['$MAKE -s --no-print-directory outofmem'])
+test('outofmem2', composes([ expect_fail_if_compiler_lt('ghc','6.9'),
+                             extra_run_opts('+RTS -M5m -RTS')]),
+                  run_command, ['$MAKE -s --no-print-directory outofmem2'])

testsuite/tests/ghc-regress/rts/outofmem.stdout

+exit(1)

testsuite/tests/ghc-regress/rts/outofmem2.stdout

+exit(251)