Uncaught RuntimeError: index out of bounds
    ccall https://ret.futo.org/riscv/build/ret.js:4380
    cwrap https://ret.futo.org/riscv/build/ret.js:4405
    assemble https://ret.futo.org/ret.js:353
    fullAssembler https://ret.futo.org/ui.js:236
    <anonymous> https://ret.futo.org/ui.js:245

I copied in a 4000-line rics-v assembly file (I started with machine codes representable in ascii, disassembled most of them piece by piece in your disassembler, now was trying to assemble back to check), pressed the "assemble" button - and I get no response from UI, "Logs go here" window was empty

I was going to complain about "add some text representing it processing if it takes so long", but then I checked f12 and saw the error

Also: I can click share button to get the link, but trying to access it goes Error code: 414 Request URI Too Long