arbitrary bit-width integers leads to an LLVM error

[komuw]

The following program works okay:

const std = @import("std");
const warn = std.debug.warn;
const assert = @import("std").debug.assert;

pub fn main() void {
    const message = "aa";

    var sum: u128 = 0;
    for (message) |byte| {
        assert(byte == 97);
        sum += byte;
    }

    assert(sum == 97 + 97);
    warn("\n sum:: {} ", sum);
}

zig fmt . && zig build-exe cool.zig && ./cool

 sum:: 194

However, trying to use arbitrary bit-width integers leads to an LLVM error with no stack trace.

const std = @import("std");
const warn = std.debug.warn;
const assert = @import("std").debug.assert;

pub fn main() void {
    const message = "aa";

    var sum: u256 = 0;
    for (message) |byte| {
        assert(byte == 97);
        sum += byte;
    }

    assert(sum == 97 + 97);
    warn("\n sum:: {} ", sum);
}

zig fmt . && zig build-exe cool.zig && ./cool
   LLVM ERROR: Unsupported library call operation!

my system:
zig version: 0.4.0+205e501
uname -ra: Darwin Kernel Version 16.7.0: Sun Oct 28 22:30:19 PDT 2018; root:xnu-3789.73.27~1/RELEASE_X86_64 x86_64

[komuw]

just found;
#1485
and
#1534
which are probably related.

We can close this issue if someone can confirm whether this is a duplicate of the above two named issues

[andrewrk]

Yes - I would consider this a duplicate of #1485.