Zig Version

0.16.0-dev.747+493ad58ff

Steps to Reproduce and Observed Behavior

pub fn main() !void {
    const x = 0;
    comptime {
        x += std.math.add(usize, x, 2);
    }
}
const std = @import("std");

$> zig run a.zig
fish: Job 1, 'zig' terminated by signal SIGSEGV (Address boundary error)
Exited with code [SIGSEGV]

Expected Behavior

"Cannot assign to constant", or a similar error