Memory leak

[imaximix]

Hello,

We have a rather large-ish and old application running grape.
We recently upgraded from 2.0 to 2.2 and noticed our RAM usage going bonkers.
The issue got tracked down to this commit

Here is a repro

[ericproulx]

I do confirm the memory leak. Nice catch.

[ericproulx]

@imaximix there's something odd by calling API.recognize_path in the route :any, '*path'. If you comment the whole route :any, '*path' it won't leak. Most of API.recognize_path are done outside of the Grape::API classes.

[imaximix]

Yea, that is the trigger.

In our real app, we use it to set 404 or 405.

if recognize_path
 405
else
 404
end

[ericproulx]

@imaximix could you give a try to #2567 ?

[imaximix]

@ericproulx works great! Thanks for the quick fix!