bug in grammar with ?:

[Brett]

Fails(loop is not taken):

for(ulong i = len - 1; i >= (true) ? 0 : 1; i--)


passes

for(ulong i = len - 1; i >= ((true) ? 0 : 1); i--)

Only difference is parenthesis(yes, that is all, doesn't matter 
if it's true or false)