Index: bin/sh/miscbltin.c
===================================================================
--- bin/sh/miscbltin.c
+++ bin/sh/miscbltin.c
@@ -231,6 +231,8 @@
 		 * If there's nothing ready, return an error.
 		 */
 		if (status <= 0) {
+			while (*ap != NULL)
+				setvar(*ap++, "", 0);
 			sig = pendingsig;
 			return (128 + (sig != 0 ? sig : SIGALRM));
 		}
Index: bin/sh/tests/builtins/Makefile
===================================================================
--- bin/sh/tests/builtins/Makefile
+++ bin/sh/tests/builtins/Makefile
@@ -141,6 +141,8 @@
 ${PACKAGE}FILES+=		read7.0
 ${PACKAGE}FILES+=		read8.0
 ${PACKAGE}FILES+=		read9.0
+${PACKAGE}FILES+=		read10.0
+${PACKAGE}FILES+=		read11.0
 ${PACKAGE}FILES+=		return1.0
 ${PACKAGE}FILES+=		return2.1
 ${PACKAGE}FILES+=		return3.1
Index: bin/sh/tests/builtins/read10.0
===================================================================
--- /dev/null
+++ bin/sh/tests/builtins/read10.0
@@ -0,0 +1,8 @@
+
+set -e
+
+v=original_value
+error=0
+read v < /dev/null || error=$?
+[ "$error" -eq 1 ]
+[ -z "$v" ]
Index: bin/sh/tests/builtins/read11.0
===================================================================
--- /dev/null
+++ bin/sh/tests/builtins/read11.0
@@ -0,0 +1,12 @@
+
+set -e
+
+T=`mktemp -u sh-test.XXXXXX`
+trap 'rm -f "$T"' 0
+mkfifo "$T"
+exec 4<>"$T"
+v=original_value
+error=0
+read -t 0 v < "$T" || error=$?
+[ "$error" -eq 142 ]
+[ -z "$v" ]