diff --git a/Makefile b/Makefile
index 162adfe..492c1a1 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,7 @@ test : all .FORCE
 
 debug : all .FORCE
 	./$(MAIN) < debug.c > debug.out
+	gcc -o debug debug.c
 	#diff debug.out debug.c
 
 $(MAIN) : $(MAIN).c object.c buffer.h
diff --git a/dotest b/dotest
index b7aaa45..d5bd321 100755
--- a/dotest
+++ b/dotest
@@ -26,6 +26,13 @@ for i in tests-gnu/*.c; do
     cmp $i $j || die $i $j
 done
 
+for i in single-exec/*.c; do
+    echo $i
+    j="${i%.c}.out"
+    $run < $i > $j
+    cmp $i $j || die $i $j
+done
+
 for i in tests-err/*.c; do
     echo $i
     j="${i%.c}.out"