Description

If thematches method ofRequestMatcher is used on an attribute which is a closure it crashes.

How did we get it

On a project that is using FOS HTTP Cache, we have this configuration

fos_http_cache:cache_control:rules:     -match:attributes:{ _controller: ^App\\Controller\\.*::.* }headers:overwrite:truecache_control:{ public: true, private: false, must_revalidate: true, s_maxage: 3600 }

Everything works fine unless you are reaching a controller that is a closure.
You get a
TypeError: preg_match(): Argument #2 ($subject) must be of type string, Closure given which is to me logical.

Proposed solution

Just testing the type of attribute value and return false before crashingpreg_match

This PR adds a quick unit test to enforce this.