Emit warnings when safe_eval() raises a SyntaxError or other Exception (#14304)
This change is related to reported issue #14291 and pull request #14293.
Without the fix from #14293, this change will emit a warning as shown below, on the following playbook:
``yaml
---
- hosts: localhost
gather_facts: no
vars:
works:
key1: 'string'
key2: 1234
fails:
key1: 'string'
key2: 1234
key3: false
tasks:
- debug: msg={{ works | to_json }}
- debug: msg={{ fails | to_json }}
```
On error, this results in a proper warning:
```
[dag@moria ansible.dag]$ ansible-playbook test49.yml
PLAY ***************************************************************************
TASK [debug] *******************************************************************
ok: [localhost] => {
"msg": {
"key1": "string",
"key2": 1234
}
}
TASK [debug] *******************************************************************
[WARNING]: Error in expression "{"key3": false, "key2": 1234, "key1": "string"}". (name 'false' is not defined)
ok: [localhost] => {
"msg": "{\"key3\": false, \"key2\": 1234, \"key1\": \"string\"}"
}
PLAY RECAP *********************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0
```
56148291e9