Hi all! I happened to stumble on a rather interesting find. I am working on a project where execution speed is of paramount importance, so I decided to go back in some places in my code and replace certain fixed-size lists with arrays. During this process, I got some errors and, long story short, I found out that if you write: Code: var a=array_create(6); var m=ds_map_create(); m[?a]=1; var s=ds_map_find_first(m); ds_map_delete(m,s); print(ds_map_size(m)); This produces the correct result in VM (0) but in YYC the key isn't deleted. Does anyone have a technical explanation on why this doesn't work on YYC? Even if arrays are pointers, they have some numeric form and in theory could be used as map keys, right? PS I know there are a couple other related threads, but they either pertain to 1.4 or don't touch upon the issue from a technical standpoint, they're more like what other things to do to avoid this (which I'm already aware of).