Zig Version

0.16.0-dev.195+ac42eaaad

Steps to Reproduce and Observed Behavior

cat <<EOF >test.zig
export fn foo() void {
    const U = union { f: fn () void };
    var x: U = undefined;
    _ = &x;
}
EOF
zig build-obj test.zig -fno-llvm
#> Segmentation fault (core dumped)

Expected Behavior

The following compile error: test.zig:3:12: error: variable of type 'test.foo.U' must be const or comptime