ash: fix unset in standalone mode

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

3 files changed, 4 insertions, 0 deletions

diff --git a/shell/ash.c b/shell/ash.c
index fcaa7b18e..74fe8617b 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -7252,6 +7252,7 @@ tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) char *cmd, char **argv, char **
 #if ENABLE_FEATURE_SH_STANDALONE
         if (applet_no >= 0) {
                 if (APPLET_IS_NOEXEC(applet_no)) {
+                        clearenv();
                         while (*envp)
                                 putenv(*envp++);
                         run_applet_no_and_exit(applet_no, argv);
diff --git a/shell/ash_test/ash-standalone/var_standalone1.right b/shell/ash_test/ash-standalone/var_standalone1.right
new file mode 100644
index 000000000..37457fd74
--- /dev/null
+++ b/shell/ash_test/ash-standalone/var_standalone1.right
@@ -0,0 +1 @@
+Done: 1
diff --git a/shell/ash_test/ash-standalone/var_standalone1.tests b/shell/ash_test/ash-standalone/var_standalone1.tests
new file mode 100755
index 000000000..1e905ba75
--- /dev/null
+++ b/shell/ash_test/ash-standalone/var_standalone1.tests
@@ -0,0 +1,2 @@
+VAR=42 $THIS_SH -c 'unset VAR; env | grep ^VAR'
+echo Done: $?