diff --git a/hacking b/hacking
index cd087ce..9161f5f 160000
--- a/hacking
+++ b/hacking
@@ -1 +1 @@
-Subproject commit cd087cebd1af4186e4cd0abdb8c5afd0f32b4e1e
+Subproject commit 9161f5fee16b7609d2421c2a465d03ec4e268c1b
diff --git a/qa/check b/qa/check
index 5d50203..65b0c14 100755
--- a/qa/check
+++ b/qa/check
@@ -9,17 +9,19 @@ if(~ $dir '') dir=/qa
 l = `{du -a /arch/$objtype/$dir|awk '{print $2}'|sort}
 
 failed = ()
-ce=.check
+runner=.runner
 
 for(t in $l){
 	if(test -x $t) {
-		echo -n $t: 
-		$t > /tmp/qa.log >[2=1]
-		st = $status
-		if(~ `{echo $st|field 3} PASS) {
-			if( test -x $t$ce ) { cp /tmp/qa.log /tmp/qa.previous.log }
-			rm /tmp/qa.log && echo PASS
+		if( test -x $t$runner ) { }
+		if not {
+			echo -n $t:
+			$t > /tmp/qa.log >[2=1]
+			st = $status
+			if(~ `{echo $st|field 3} PASS) {
+				rm /tmp/qa.log && echo PASS
+			}
+			if not { echo $st && cat /tmp/qa.log; exit $st}
 		}
-		if not { echo $st && cat /tmp/qa.log; exit $st}
 	}
 }
diff --git a/qa/lib/newlib/hello.c b/qa/lib/newlib/000-hello.c
similarity index 100%
rename from qa/lib/newlib/hello.c
rename to qa/lib/newlib/000-hello.c
diff --git a/qa/lib/newlib/fork0.c b/qa/lib/newlib/010-fork.c
similarity index 89%
rename from qa/lib/newlib/fork0.c
rename to qa/lib/newlib/010-fork.c
index 518c4a7..060496b 100644
--- a/qa/lib/newlib/fork0.c
+++ b/qa/lib/newlib/010-fork.c
@@ -32,9 +32,9 @@ int main(int argc, char **argv)
 		}
 		wait(&status);
 		if(status != 0){
-		printf("parent: child exited with status %d\n", status);
-		return 2;
-	}
+			printf("parent: child exited with status %d\n", status);
+			return 2;
+		}
 	}
 	else
 	{
diff --git a/qa/lib/newlib/100-files.c b/qa/lib/newlib/100-files.c
new file mode 100644
index 0000000..ad0f5e8
--- /dev/null
+++ b/qa/lib/newlib/100-files.c
@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+int
+main(int argc, char** argv) {
+	FILE *fp;
+	int i;
+	char * output = "/tmp/io-test.txt";
+
+	if(argc == 2){
+		output = argv[1];
+	}else if(argc > 2){
+		printf("usage: %s [output]", argv[0]);
+		return 100;
+	}
+
+	fp = fopen(output, "w+");
+	if(fp == NULL){
+		printf("Can't open %s", output);
+		return 1;
+	}
+	i = fprintf(fp, "%s works.\n", "fprintf");
+	if(i <= 0){
+		fclose(fp);
+		printf("Can't write 'fprintf works.' to %s", output);
+		return 2;
+	}
+	i = fputs("fputs works.\n", fp);
+	if(i == EOF){
+		fclose(fp);
+		printf("Can't write 'fputs works.' to %s", output);
+		return 3;
+	}
+	fclose(fp);
+	return 0;
+}
diff --git a/qa/lib/newlib/100-files.runner b/qa/lib/newlib/100-files.runner
new file mode 100644
index 0000000..4fcd8ac
--- /dev/null
+++ b/qa/lib/newlib/100-files.runner
@@ -0,0 +1,18 @@
+#!/cmd/rc
+runner=$0
+test = `{echo $runner|sed 's/.runner//'}
+test_output = /tmp/output-`{basename $test}
+
+if ( test -e $test_output) rm $test_output
+
+$test $test_output > /dev/null
+if ( cat $test_output | grep 'fprintf works.' > /dev/null ) {
+	if ( cat $test_output | grep 'fputs works.' > /dev/null ) {
+		rm $test_output
+		echo PASS
+		exit PASS
+	}
+}
+cat $test_output
+echo FAIL
+exit FAIL
diff --git a/qa/lib/newlib/build.json b/qa/lib/newlib/build.json
index 3582b01..fe90b1d 100644
--- a/qa/lib/newlib/build.json
+++ b/qa/lib/newlib/build.json
@@ -3,9 +3,6 @@
 		"Include": [
 			"/arch/$ARCH/include/cflags.json"
 		],
-		"Projects": [
-			"testsuite/"
-		],
 		"Cflags": [
 			"-fstack-check",
 			"-fstack-protector-all",
@@ -24,7 +21,7 @@
 		"Install": "/arch/$ARCH/qa/lib/newlib",
 		"Post": [
 			"rm -f *.o",
-			"#cp *.rc $JEHANNE/arch/$ARCH/qa/lib/newlib/"
+			"cp *.runner $JEHANNE/arch/$ARCH/qa/lib/newlib/"
 		],
 		"Pre": [
 			"rm -f *.tag.*"
@@ -33,8 +30,14 @@
 			"libposix_customization.c"
 		],
 		"SourceFilesCmd": [
-			"hello.c",
-			"fork0.c"
+			"000-hello.c",
+			"010-fork.c",
+			"100-files.c"
+		]
+	},
+	"NewlibTestsuite": {
+		"Projects": [
+			"testsuite/"
 		]
 	}
 }
diff --git a/qa/lib/newlib/testsuite/atexit.check b/qa/lib/newlib/testsuite/atexit.check
deleted file mode 100755
index 9bd4573..0000000
--- a/qa/lib/newlib/testsuite/atexit.check
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/cmd/rc
-
-if ( cat /tmp/qa.previous.log | grep a0cba > /dev/null ) {
-	rm /tmp/qa.previous.log
-	echo PASS
-	exit PASS
-}
-if not {
-	echo FAIL
-	cat /tmp/qa.previous.log
-	exit FAIL
-}
diff --git a/qa/lib/newlib/testsuite/atexit.runner b/qa/lib/newlib/testsuite/atexit.runner
new file mode 100644
index 0000000..70e9c05
--- /dev/null
+++ b/qa/lib/newlib/testsuite/atexit.runner
@@ -0,0 +1,18 @@
+#!/cmd/rc
+runner=$0
+test = `{echo $runner|sed 's/.runner//'}
+test_output = /tmp/output-`{basename $test}
+
+if ( test -e $test_output) rm $test_output
+
+$test > $test_output
+if ( cat $test_output | grep a0cba > /dev/null ) {
+	rm $test_output
+	echo PASS
+	exit PASS
+}
+if not {
+	cat $test_output
+	echo FAIL
+	exit FAIL
+}
diff --git a/qa/lib/newlib/testsuite/build.json b/qa/lib/newlib/testsuite/build.json
index 1cc2a00..f811209 100644
--- a/qa/lib/newlib/testsuite/build.json
+++ b/qa/lib/newlib/testsuite/build.json
@@ -24,7 +24,7 @@
 		"Post": [
 			"mkdir -p $JEHANNE/arch/$ARCH/qa/lib/newlib/testsuite",
 			"find -type f -perm /a+x -exec cp {} $JEHANNE/arch/$ARCH/qa/lib/newlib/testsuite/ \\;",
-			"cp *.check $JEHANNE/arch/$ARCH/qa/lib/newlib/testsuite/",
+			"cp *.runner $JEHANNE/arch/$ARCH/qa/lib/newlib/testsuite/",
 			"git clean -xdf ."
 		],
 		"Pre": [