[Fontconfig] Random weight values?

[Jerry Casiano]

On Fedora 21 using Fontconfig 2.11.94

I noticed that I get random Fontconfig weight values. Unless it was
always the case and I just noticed it now by enabling crappy font
files. But I thought, assumed actually, that Fontconfig would always
clamp/round weights to FC_WEIGHT_*

fc-list : weight 

:weight=0
:weight=40
:weight=45 <-- ?
:weight=50
:weight=75
:weight=80
:weight=90 <-- ?
:weight=100
:weight=174 <-- ?
:weight=180
:weight=200
:weight=205
:weight=210
:weight=215

Is this a regression? Or was it always the case?

Thanks.