Avoid segfault when export is invoked with no arguments. Thanks to

Gennady Feldman.

3 files changed, 3 insertions, 0 deletions

diff --git a/lash.c b/lash.c
index 28015cbb3..89325b63d 100644
--- a/lash.c
+++ b/lash.c
@@ -426,6 +426,7 @@ static int builtin_export(struct child_prog *child)
                 for (e = environ; *e; e++) {
                         printf( "%s\n", *e);
                 }
+                return 0;
         }
         res = putenv(v);
         if (res)
diff --git a/sh.c b/sh.c
index 28015cbb3..89325b63d 100644
--- a/sh.c
+++ b/sh.c
@@ -426,6 +426,7 @@ static int builtin_export(struct child_prog *child)
                 for (e = environ; *e; e++) {
                         printf( "%s\n", *e);
                 }
+                return 0;
         }
         res = putenv(v);
         if (res)
diff --git a/shell/lash.c b/shell/lash.c
index 28015cbb3..89325b63d 100644
--- a/shell/lash.c
+++ b/shell/lash.c
@@ -426,6 +426,7 @@ static int builtin_export(struct child_prog *child)
                 for (e = environ; *e; e++) {
                         printf( "%s\n", *e);
                 }
+                return 0;
         }
         res = putenv(v);
         if (res)