diff options
| -rw-r--r-- | apps/app_stack.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/apps/app_stack.c b/apps/app_stack.c index 08a6c38c3..444aa4047 100644 --- a/apps/app_stack.c +++ b/apps/app_stack.c @@ -356,7 +356,12 @@ static int local_read(struct ast_channel *chan, const char *cmd, char *data, cha oldlist = stack_store->data; AST_LIST_LOCK(oldlist); - frame = AST_LIST_FIRST(oldlist); + if (!(frame = AST_LIST_FIRST(oldlist))) { + /* Not within a Gosub routine */ + AST_LIST_UNLOCK(oldlist); + return -1; + } + AST_LIST_TRAVERSE(&frame->varshead, variables, entries) { if (!strcmp(data, ast_var_name(variables))) { const char *tmp; |