diff --git a/tools/regression/usr.bin/sed/regress.c0.out b/tools/regression/usr.bin/sed/regress.c0.out
new file mode 100644
index 000000000000..a1f894413ef3
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.c0.out
@@ -0,0 +1,4 @@
+foo
+foo
+foo
+foo
diff --git a/tools/regression/usr.bin/sed/regress.c1.out b/tools/regression/usr.bin/sed/regress.c1.out
new file mode 100644
index 000000000000..21af01e3aaac
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.c1.out
@@ -0,0 +1,4 @@
+input
+data
+for validation
+foo
diff --git a/tools/regression/usr.bin/sed/regress.c2.out b/tools/regression/usr.bin/sed/regress.c2.out
new file mode 100644
index 000000000000..6c54a8d978ff
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.c2.out
@@ -0,0 +1,3 @@
+input
+data
+foo
diff --git a/tools/regression/usr.bin/sed/regress.c3.out b/tools/regression/usr.bin/sed/regress.c3.out
new file mode 100644
index 000000000000..6c54a8d978ff
--- /dev/null
+++ b/tools/regression/usr.bin/sed/regress.c3.out
@@ -0,0 +1,3 @@
+input
+data
+foo
diff --git a/tools/regression/usr.bin/sed/regress.sh b/tools/regression/usr.bin/sed/regress.sh
index 45d8f85e2a41..3e7ba5fcc19b 100644
--- a/tools/regression/usr.bin/sed/regress.sh
+++ b/tools/regression/usr.bin/sed/regress.sh
@@ -2,7 +2,7 @@
 
 REGRESSION_START($1)
 
-echo '1..11'
+echo '1..15'
 
 REGRESSION_TEST(`G', `sed G < regress.in')
 REGRESSION_TEST(`P', `sed P < regress.in')
@@ -15,5 +15,17 @@ REGRESSION_TEST(`s4', `echo foo | sed s/,*/,/4')
 REGRESSION_TEST(`s5', `echo foo | sed s/,*/,/5')
 REGRESSION_TEST(`hanoi', `echo ":abcd: : :" | sed -f hanoi.sed')
 REGRESSION_TEST(`math', `echo "4+7*3+2^7/3" | sed -f math.sed')
+REGRESSION_TEST(`c0', `sed ''`c\
+foo
+''`< regress.in')
+REGRESSION_TEST(`c1', `sed ''`4,$c\
+foo
+''`< regress.in')
+REGRESSION_TEST(`c2', `sed ''`3,9c\
+foo
+''`< regress.in')
+REGRESSION_TEST(`c3', `sed ''`3,/no such string/c\
+foo
+''`< regress.in')
 
 REGRESSION_END()
diff --git a/usr.bin/sed/process.c b/usr.bin/sed/process.c
index 83fe325b1e57..ee9334c24512 100644
--- a/usr.bin/sed/process.c
+++ b/usr.bin/sed/process.c
@@ -128,7 +128,7 @@ process(void)
 			case 'c':
 				pd = 1;
 				psl = 0;
-				if (cp->a2 == NULL || lastaddr)
+				if (cp->a2 == NULL || lastaddr || lastline())
 					(void)fprintf(outfile, "%s", cp->t);
 				break;
 			case 'd':