int128/uint128 static check valid range

[visualfc]

The following program sample.gop triggers an unexpected result

// add a sample
var a uint128 = 1e60
println a

Expected result

build static check 
main.gop:1:17: cannot use 1e60 (type untyped float) as type uint128 in assignment

Got

panic: value &{false [1152921504606846976 15520040025107828953 5703569335900062977 159]} was not in valid uint128 range

Gop Version

d1401eeadf067626221e2ee178c28685655f24cd

Additional Notes

No response