segfault when slicing with pointer start index

[emekoi]

test case:

test "foo" {
    _ = blk: {
        var array = [_]u8{};
        var idx: *usize = undefined;
        break :blk array[idx.*..];
    };
}

[LemonBoy]

The result location madness strikes again. In ir_render_slice we have that tmp_struct_ptr is nullptr because the result is actually discarded and the result slot is typed as *void.

One should add something like this to

    if (!type_has_bits(instruction->result_loc->value.type)) {
        return nullptr;
    }

just before the line:

LLVMValueRef tmp_struct_ptr = ir_llvm_value(g, instruction->result_loc);

[tuket]

What should be the expected output for this?

[emekoi]

this is a reduced test from somewhere else in my code. what it boils down to is that i was trying to index an array with a variable from a capture block in a loop.

[andrewrk]

This now gives:

./test2.zig:5:25: error: expected type 'void', found '[]u8'
        break :blk array[idx.*..];
                        ^

expected output is to compile successfully.